The Molinoinox was founded in 1992 as a company specializing in the distribution of semi-finished products and accessories in stainless steel for food, nautical and of metal structures and equipment.
The commercial structure makes use of a logistical organization which allows to reduce to the minimum the time of preparation and delivery of materials.
The wide range of products available and delivery allow us to offer clients a unique service, which is delivered at the same time different but complementary products, such as tubes, sheets, rods and accessories, always with high quality.
Trade agreements, with the most important Italian and foreign steel mills, allow us to prepare batches of product in the quantity, quality and finish required.
The Molinoinox ensures the most careful advice, the result of a long and rich experience as a market that we place at your service. Molinoinox was established in 1992 as a specialized supplier providing Stainless Steel products to a variety of manufacturing and engineering clients in various industries including nautical, construction and plants.
Warehouse facilities are supported with logistic plans and forward thinking innovations That allow us to arrange and deliver goods on short lead times.
Our wide range of products combined with quick and convenient delivery Ensure an excellent customer service, Which is providing different but complementary products including tube, sheet, rounds and several components, guaranteed Maintaining high quality standards.
Rizhao Shun Steel Pipe Manufacturing Co., Ltd. is located in Rizhao City, Shandong Province. The company invests in early 2006 to build, covers an area of over 30,000 square meters. The main production 14-114mm (diameter) 1mm × 16mm (thickness) of cold drawn seamless steel tubes, cold-rolled and honing tube. Widely used in boilers, petrochemical, machinery manufacturing and other industries.
Companies producing all kinds of national standard, American standard, Japanese standard, such as the elbow.
The company has advanced eddy current NDT line, mechanical properties and physical and chemical laboratory, quality process control means perfect, to ensure the stability of product quality.
Welcome friends to visit, guide and negotiate business.
Shandong Shouguang Juneng Special Steel Co., Ltd is a large enterprise specializing in producing special steel bars and casing pipes. It was put into production in October, 2003.
Our company owns six mills including sintering mill, iron-making mill, steel-making mill, steel-rolling mill, pipes mill and motive mill as well as other 17 departments and one provincial enterprise technology center. With a coverage of 1650000㎡, total assets of 5 billion RMB and more than 4500 staff and employees, the company mainly produces 10 series of products including high-quality carbon structural steel, alloy structural steel, round billets for casing and tubing, steel used for oil pumping bars, marine steel for ship anchor chain, spring steel, bearing steel, carbon tool steel, oil casing pipe and line pipe, etc. It has an annual production capacity of 2 million tons of special steel bars and pipes.
Bearing steel, high-quality steel and steel used for high strength bolts produced by Juneng have obtained honorary Famous Products of Shandong Province. Marine steel for ship anchor chain has got certificates of 8 countries including LR of Britain, NK of Japan, ABS of America, DNV of Norway, BV of France, GL of Germany, KR of South Korea and CCS of China. Tube billets for middle or high pressure furnace, bearing steel, hot-rolling reinforced bar with ribs and seamless pipes have obtained the manufacturing certificate issued by National Quality Supervision and Inspection General Administration. Seamless pipes also got API certificate and the supplier certificate of CNPC and SINOPEC. In addition, Juneng is the key enterprise of China petroleum equipment industrial base. Our special steel products have been placed in the importantly developing metallurgical products series of Shandong Province “12th Five-Year Plan”. Our products have been exported to many countries and areas such as Japan, South Korea, Middle East, Europe, America and Africa, and are widely used in agricultural machinery, petroleum, chemical industry, railway, mining, automobile, shipbuilding and other mechanical processing or manufacturing industry. The company is the largest production base of special steel in Shandong Province.
Over the past few years, Juneng adhere to the business, persist in the creating and strive to be the best. The quality achieved new breakthrough with economic efficiency growing steadily and continuously. Juneng is always trying to create value for clients and society, pay back to the regards and great kindness from all sectors of the community with much more excellent achievements. We are willing to have a dedicated cooperation with all the friends domestic and overseas to create a better future.
Shanghai Lee&Yu International Co.,Ltd is a famous su-pplier in valve and pipe industries of China . We provide a wide range of products including valves, fittings, flan-ges and pipes . We hold the operating philosophy and advantages which lie in offering the most competitive pr-oducts with excellent quality to our customers supported by the Chinese plentiful sources and our many years’ e-xpertise.
For years, we have devoted us to serving such diversifi-ed industries as the chemical, Petrochemical, medicine
,beverage industries in the process of promoting our products and our reliable service.So far, we have established stable business relationship with many customers from all over the world. All of them can get competitive goods from our sincere offering and they become more stronger. Mean-while, we enjoy the good reputation in the pipe&valve industries, which also constantly encourage and push us to render better service to our customers in return for their loyal patronage.
All our products are designed, manufactured and tested in strict compliance with the standards of API, ANSI, DIN, BS, JIS, ISO, MSS SP and AWWA etc., and most of our manufacturers have acquir-ed ISO 9001, API 6D, TUV and CE certificates to ensure the quality stability of the products.
Lee&Yu is your best business partner if you are a company who keeps pursuing perfection and r-eliability. We are also confident and interested in serving more customers and growing with them based on satisfying mutual benefit.
Shanghai Tian Yang Steel Tube Co.,Ltd. is a modern enterprise for tube making which is specialized to make the seamless steel tube of DIN series featured with high accuracy and brightness.
The company has an area of 17 000 m2, in which 8000 m2 was stood by buildings, 4000 m2 was planted with trees and flowers, 3000 m2 was laid as path and 2000 m2 was dug as pond. The plant buildings are standing highly and straightly, path is neat and clean, afforestation and environment protection are highlighting of the company. Wandering about in company, birds singing, flowers in full bloom, golden fish jumping, earth covered with green lawn and trees stood all along the line –plant in garden as you are feeling.
The wealth of company is the staff with highly educated and richly experienced people and the employees of spirited, career loving and united person. To pay respect to the intellectual and being eager for the talent, the company has recruited, trained and introduced the different talents to the relevant working positions during past few years. The total number of employees is up to 126, of which the management staff is 21, works are 105. One chief engineer (with the glorious title of Laboring Model of Shanghai), one economist and seven persons with the senior professional titles, intermediate and/or junior are in company’s management body. Twelve persons are professional inspectors in quality.
The seamless steel tubes made by company are based on the DIN EN (DIN2391 EN10305) Standard. The hot rolled seamless tube produced by Shanghai Baosteel Company is used as transfer bar of our company. The finished product is made with the exclusive process of cold drawing and/or cold rolling of our company. The steel tube is featured with high precision and high brightness. Because of using the exclusively non-oxidization process of bright heat treatment, the inner and outer walls have high cleanness without oxidized surface. The tube has the excellent mechanical properties, resulting in no leakage under the high pressure, no deformation after cooling bent and no seam after flaring and pressing in different applications.
The company stands for producing high quality steel tube. Currently, the company owns four modern production lines configured with combined equipments from China and abroad, and has the complete set of inspection and testing equipments. The annual capacity is up to 15000 tons. Now, we have three series of EN/DIN high precision and high brightness seamless steel tube, stainless steel tube and DOUBLE WALL STEEL TUBE. The products of our company have been extensively used as a substitute of the imported steel tubes with the same standard for
application in varieties of industries, such as hydraulic system, automobile fabrication, military industry, engineering, locomotive, aircraft, shipbuilding, plastic injection molding, pressure mold, machine tool, diesel, petrochemical industry, power station, boiler, etc. And the good comments have been obtained from the customers.
At the same time when the achievement is obtained, the company has continued to improve the management in quality, carried out in depth the quality management system of ISO9001 inside the enterprise. The investment is putting into the scientific research & development for new techniques and products are developing. Specially, the service consciousness for customer is strengthened. Based on these activities, the company formed the concept of “Seeking Advanced Process, Stabilizing Production Quality, Improving Management Infinitely and Serving Customer Flexibly” to manage the company.
In 2002, the company’s product was stepped into the international market at the first time and exported successfully to the Germany where the DIN standard was established. Nowadays, the steel tube has been exported to more than twenty countries and regions such as South Korea, Japan, Greece, South Africa, Turkey, Singapore, Spain, USA, Canada and Taiwan. At the
Shijiazhuang Hongda Steel Tube Co., Ltd., a company located in Shijiazhuang City Baifo steel market area B 28 numbers. Spot market have: 2000 square meters large yard and six warehouses, warehouse equipment 5-50 tons lane four, five 100 tons of electronic scales. Outdoor equipment 20 tons of traffic, 100 tons of electronic scales. Transportation is very convenient location. Mechanization of loading and unloading stowage transport train service.
Company cash management: seamless 10mm-820mm * 1mm-mm60 Steel, Tianjin Steel, Linyi production. Spiral Pipe 219mm-3000mm * 6mm-25mm Cangzhou, Tianjin production. Longitudinal 4 of 5 -3000mm * 1mm-50mm Tianjin, Hengshui, Handan production. Pipe fittings: elbow, flange, tee and steel facilities, Cangzhou production. Rectangular pipe, angle, channel, I-beam, H-beam Tangshan, Laiwu Steel, Tianjin origin.
Products are widely used: petroleum, chemical, natural gas transportation, piling, urban water supply, heating ,, boiler plants, oil refineries, machinery plants, environmental engineering, steel, etc. to provide quality steel.
Companies in the first, puerile principle of credibility, quality service, flexible business model to develop new markets; great assistance in support of our new and old customers at …
Established in the year 2007, SLS Tubes Pvt. Ltd., is a Mumbai based manufacturers, suppliers & exporters of seamless and welded pipes, tubes including U-Tubes, flanges and fittings that are available in Stainless Steel, Carbon Steel, Titanium & Hastelloy. The complete product range we deal in includes Duplex Steel Pipes, Super Duplex Steel Pipes, Titanium Pipes and Tubes, Titanium Flanges, Titanium Fittings, Hastelloy Pipes and Tubes, Hastelloy Flanges, Hastelloy Fittings and Stainless Steel Fittings. Further, we also offer Welded / ERW Pipes and Tubes, Seamless Pipes & Tubes, U Bend Tubes and Carbon Steel/Alloy Steel Seamless Pipes.
Our business operations are led by Mr. Shanti Bhai Sanghvi, who holds with him extensive experience in this industry. His dedicated support and visionary guidance has helped us in emerging as a leading player in this industry. Further, the service support of experienced industry professionals also allow us to deliver stainless steel and carbon steel pipes and tubes in a wide range of finishes as demanded by our customers.
Operating from our registered office located at Ahmadabad and corporate office located at Mumbai, today, we are successfully catering to the challenging requirements of diverse industries. Our expertise in bringing out innovation in the offered product range and consistent approach in delivering quality products at competitive prices has also helped us in sustaining the end product demands of today’s highly competitive market place.
Tianjin Dalipu Oil Country Tubular Goods Co., Ltd is currently an emerging production and marketing enterprise based production Casing and Tubing. Located in Tianjin, near the capital Beijing, and Tianjin Port the largest port in north of China,owning convenient transportation, unique geographical conditions.
With API 5CT oil casing and API 5L oil line pipe as the main products,with production and sales integration, professional domestic and foreign trade operations, strength financial , rich experience.
Tianjin Zhonghua Innovated Steel Tube Commercial Co.,Ltd is located in Beichen of Tianjin. Our company is a branch of Zhonghua Group and specializes in producing seamless pipes and tubes with all sizes and a wide range of materials used in structure, petrifaction, boiler, power and steamer fields. “Professional management and plenty of stock” is our policy. We supply all kinds of seamless steel pipes, such as structure pipes, fluid pipes, boiler pipes, high pressure pipes, line pipes and chemical fertilizer pipes which fully comply with the international standards of ASTM/ASME, API, DIN and JIS. Our products are all manufactured by top 10 manufacturers in China, such as Bao Steel, Baotou Steel, Chengdu Steel, Anshan Steel, TPCO, Hongdu Steel, Hualingheng Steel and Pancheng Steel. We have established long-term and stable relationships with many famous international companies, such as Japanese JFE, SUMITOMO and NKK, German VALLOUREC and MANNESMANN and Italian BENTELER and TENARISDALMINE. Based on our superior quality products, competitive prices and professional service, we have set up good relationships with many customers from aboard successfully. We always develop new products to meet clients’ changing requirements. We warmly welcome customers from all over the world to visit and cooperate with us. It is our great pleasure to serve you and you can be assured to get an accurate and reasonable price.
Vergalli Steel was founded in 1994 to Felegara, a small village in the province of Parma, from ‘idea of Maria Chiara Vergalli of market wholesale stainless steel products. The initial project was consolidated over the years thanks to the valuable collaboration of Patrick warehouse manager, and Silvia, administrative manager. The company is taking root in the territory widening the range of products that, in addition to the plates in various sizes and AISI Business with 2B finish, Scotch Brite and hot, includes, round and shaped tubes, flat bars, round bars, angles, square bars , perforated plates, welded mesh, fittings to ISO and DIN. The company’s philosophy has always been the same: to be always attentive to the needs and expectations of its customers, ensuring wide availability of products and while providing articles and several complementary, with immediacy and quick delivery, right mix make it truly unique in the field of small distribution.
Established in 2006, with headquarter located in Qingshan village, Wenzhou, Stellar Tube & Pipe Group Co., Ltd. is a large scale international group company specialized in manufacturing and selling of stainless steel products as well as mineral exploitation.
Started as a manufacturer and seller of stainless steel seamless tubes & pipes, and now we are becoming a comprehensive enterprise integrating developing, productions, and operation, whose main products include stainless steel seamless tubes & pipes, stainless steel welded pipe, fittings and nickel ore resources. And the number of its wholly-owned subsidiary companies has been expanded to 10.
Though Stellar has established for a few years, it steady forged ahead with the powerful strength. In 2009 and 2010 Stellar has taken over the top position of national output of stainless steel pipes and honored as “Advanced Enterprise in China Stainless Steel Industry” for 2 years running. Chen Shangsong, the chairman of Stellar was awarded as “Outstanding Entrepreneur of China Stainless Steel Industry” in 2010and 2011. As a large enterprise, Stellar sets a good example for paying much attention on the brand and honoring credit, Stellar has rated “Good Faith Private Enterprise”.
Stellar is specialized in producing of stainless steel seamless tubes & pipes, stainless steel welded pipes and fittings. Our products are widely applied in petroleum, chemical industry, machinery, power, shipbuilding, pharmacy, food and aviation& spacecraft, etc. The domestic sale network is almost across the country. Stellar is establishing its worldwide market steadily and strongly, such as Europe, America, Japan, Korea, Southeast Asia, the Middle East and etc.
Stellar sticks to a global strategy, aiming to get a deeper development in stainless steel industry. Stellar devotes itself to providing first class quality and service, meanwhile, Stellar tries all its best to seek a deeper development and look for a positive transformation. Stellar continually looks for opportunities to strengthen the company’s existing presence in the global arena and strives to meet and set world-class standards in every respect.
Shandong Witsteel International Trading Co., Ltd
Located in beautiful seaside city Qingdao, mainly import and export iron ore, carbon steel, stainless steel, alloy steel products such as sheet, coil, plate, round bar, angle steel, channel steel, seamless and welded pipe, fitting and so on.
Witsteel was the subsidiary corporation of Shandong Tianbao Group. Which was established in year 1997. Now become the No. 1 steel trading company in Shandong Province. The top 500 enterprise of China. And we already build very good relationship with many customers from 70 countrys around the word.
Witsteel has excellent international saling team. Have 10 years experience in steel industry. Our siscientific program for customers to save 5%.
We will continue to use our professional and high efficient service to offer our customer more economical soluotion on business.
Wuxi Huaye lron and Steel Co., Ltd. was founded in Oct., 2000, with total investment of 25 million U.S Dollars, which is a large-scale iron and Steel enterprise specialized in producing hot-rolled and cold-rolled steel strip.
Wuxi Huaye lron and Steel Co., Ltd. is situated in the region of Shitangwan Industrial Park, the Northwest Suburb, and WuXi with advantageous geographical position and convenient communication. Hu- Ning Express Way is on the north and Hu-Ning Railway, Jing-Hang Canal, No. 312 National way are on the south and Xi—Cheng Canal is on the east. The land area of the company is more than 300, 000 M2, in which, the building area is 100, 000 M2. There are 450 workers and staff members, including 75 various engineers, technicians and administrators with senior professional titles.
The main production equipment includes one advanced hot-rolled steel strip production line; 450cold- rolled steel strip reversible rolling mills； 12 acid-washing production line；auto-control cuting machine vertically and horizontally；24 sets of PC control fading-fire bright fnish facility, With advanced equipments and excellent technology we have an annual output of 350, 000 tons hot-rolled steel strip and 250, 000 tons cold-rolled steel strip. The main grade Of our products includes： carbon steel (Q195、Q215、Q235), Structural alloy steel, silica steel and stainless steel.
The production lines of hot-rolled steel strip adopted the international advanced continuous rolling technique. The machine set adopted the advanced technology and equipments, such as all-digital and all- network technology control and electric closed loop. The electrical controlled system adopted the up-to- date SIEMENS S7-400 PLC Artificial Intelligent control system it not only satisfied the craft demand of on-the-spot production, but also provided flexible and convenient man-machine operation interface for productive operation. The DCS plan organized by computer network fully reflected the thinking of modern computer control of decentralized control and centralized management.
Zhangjiagang City Yiyang Pipe Producing Co.,Ltd locates in Zhangjiagang City,Jiangsu Province that is known as the center of Yangtze River delta economic district. It adjoins Shanghai and its one-hour traffic circle contains many large and medium-sized cities such as Suzhou,Wuxi and Nantong etc. Meanwhile the international port-Zhangjiagang port is near at hand.Transportation hear is very convenient by land,water and air.
Our corporation specializes in producing cold-drawing & cold-rolling seamless steel tube as well as bearing rings,with Zhangjiagang Yiyang Pipe Producing Co.,Ltd, Zhangjiagang Yichen Steel Tube Co.,Ltd, Zhangjiagang City Yiyang Precision Bearing Co.,Ltd, Hongze Yiyang Steel Tube Co.,Ltd, Zhang Jiagang City Yiyang Pipe Producing sales Co.,Ltd and Zhangjiagang City Yiyang Import and Export Trading Co.,Ltd as the affiliate enterprises.
Our Corporation has established our own Technology Research and Development Center and possesses professional technology management team. We have obtained ISO9001,TS16949 Quality Management System Certificate,ISO14001 Environment Management System Certificate and CE-PED Certificate. Our corporation’s product is top-grade with stable quality and its general competitive ability tops the list in steel industry.
Currently our corporation covers an area of 230 thousand square meters and possesses 130 thousand square meter’s standard workshop. Our annual production capacity is 100 metric tons’ seamless steel tubes and owns 8 sets of Piercing device,62 sets of Φ30-Φ100 cold rolling machines, 38 sets of 5-80 ton cold drawn machines, 9 sets of continuous heat treatment furnaces, 2 sets of continuous bright annealing & normalizing furnaces as well as appropriate supporting devices. Our corporation’s automation keeps ahead in steel industry in China. With advanced and complete testing equipments, we can put up various tests and analysises. So far we are well-equipped with many testing machine as well as automatic online ultrasonic & eddy-current testing line. We can guarantee our product’s quality and advanced technology with these perfect testing facilities.
We can manufacture various seamless steel tube,high-performance bearing steel tube,various seamless steel tube for autos,tubes for high and low-pressure boilers,as well as seamless steel tube for structure as per various standards and clients requests of specification. Steel industry’s development promotes civilization’s advancement and improves every a spect of the society. With the target of “Enhancing steel industry value,creating top-grade brand”,Yiyang Pipe Producing Co.,Ltd will grow up and develop with clients together,apply ourselves to create a brighter and flourishing futurel!
ZHEJIANG GUANYU STEEL TUBE CO., LTD. is one of the professional manufacturers of steel pipes and pipe fittings. We focus on production and sales of the products in 300 grade series, particularly in ferrite-austenite duplex phase stainless steel, including 201, 202, 301, 304/304L/304H, 316/316L, 321/H, 347H, 317/317H, 310S, S31803/S32205, 2304, 904L, etc.
Provided with 15 cold-drawing machines, 4 sets of cold-rolling equipment, a full set of vortex and ultrasonic testing equipment, as well as a number of engineers and technical staffs, the company can produce pipes with a specification of Ф6~426 *0.5~36mm, including different types of steel seamless pipes, welded pipes, decorative pipes, boiler pipes, bright annealed pipes, precision pipes, sanitation pipes, high-pressure pipes, corrosion-resistant pipes, high-temperature pipes, and related pipe fittings.
Located in Songyang Stainless Steel Industrial Zone, enjoying convenient transporataion to Shanghai and Ningbo by next to Expressways and Railway, the company has provided GUANYU products and services for industries ,such as domestic petroleum, chemical industry, papermaking, shipbuilding, medicine, food, nuclear power, military industry, machinery, etc and has exported to Asia, North America, Afirca, Europe and other regions. Sincerits inception, the company has been serving the customers under the development philorophy of “CREDIBLE SCIENTIFIC, HARMONIOUS, PERSISTENT”. Welcome to visit our company for cooperation and common development
Neon Alloys an ISO 2000 : 2008 Certified company. We supplying, manufacturing and exporting of high quality industrial products like industrial pipe, seamless pipe, welded pipe, stainless steel pipe, carbon steel pipe, steel pipe, stainless steel sheets, steel plates, welded tube, efw pipe & tube, etc. We also manufacturing and specialized in stainless steel, carbon steel, alloy steel, duplex steel, high nickel alloy pipes & tubes.
Victor Steel Corporation is a prominent name in manufacturing and exporting of high quality of API & Carbon Steel Seamless Pipe & Tube in India. Victor Steel Corporation offers a commendable range of ASTM A 106 GR B, API & Carbon Steel Seamless Pipe & Tube for the prestigious clients with competitive price. We manufacture and export premium quality of API Pipe X42 & API 5L Carbon Steel Seamless Pipes & Tubes in India.
Ped certified manufacturer of PTFE COATED fasteners like bolts, nuts, washers, threaded rod. Materials included inconel, monel, hastelloy, duplex and super duplex steel fasteners. Xylan Coating, PTFE coating dacromet coating is our speciallity.
Since the past few years we have expertise in all exotic grades of fasteners meeting custom requirements if our esteemed clients varying from aeronautics to general purpose applications.
Fasteners are a crucial part of our manufacturing line.
Our manufacturing range in metric sizes ranges from m1-m150
and imperial size ranges from 1/4″-6″ and #1-#20 in numeric inch series.
some of the most known fasteners are mentioned below
Stainless steel fastener range are manufactured in the following grades
- 410 stainless steel fasteners used for martensitic applications
- 304 stainless steel fasteners used for general purpose applications
- 304l stainless steel fasteners used for cryogenic applications
- 309 stainless steel fasteners used for high temperature applications
- 310 stainless steel fasteners used for high temperature applications
- 316 stainless steel fasteners used for corrosive environments
- 316l stainless steel fasteners used for sea water applications
- 317l stainless steel fasteners used for corrosive environments with high temperature applications
- 321 stainless steel fasteners used for high temperature applications
- 347 stainless steel fasteners used for high temperature applications
- 348 stainless steel fasteners used for high temperature applications
- a286 fasteners used for high temperature applications like aerospace.
Apart from stainless steel we also produce alloyed stainless steel fasteners which are expensive as compared to austenitic and martensitic stainless steel known at nitronic stainless steel below are the grades mentioned.
for high temperature applications, a cheaper alternative as compared to nickel alloys are nemonic alloys mentioned below.
For corrosive environments we produce monel fasteners namely
Corrosion and high temperature resistance both can be achieved in the below inconel fasteners.
- inconel 600 fasteners
- inconel 603 fasteners
- inconel 602 fasteners
- inconel 601 fasteners
- inconel 625 fasteners
- inconel 617 fasteners
- inconel 718 fasteners
- inconel x 750 fasteners
- inconel 686 fasteners
high temperature fasteners generally used for aeronautics are mentioned below.
high temperature plus high corrosion resistant hastelloy fasteners are manufactured in the following four grades at torqbolt
99% pure nickel based fastners used for special applications.
titanium and aeronautics have a very old relation and particularly in the following 2 grades.
if better corrosion resistant fasteners are required as compared to stainless steel, silicon bronze and copper nickel is used.
high temperature alloy steel available at cheaper rates as compared to nickel alloys.
Super high austenitic and precipitation hardening stainless steel grades
- 330 stainless steel fasteners
- 904l stainless steel fasteners
- 254 smo fasteners
- alloy 20 fasteners
- 17 4 ph fasteners
- 15 5 ph fasteners
- al 6xn fasteners
Dual Phase stainless steel fasteners with high prep ration used for extremely corrosive environments with high toughness,
- duplex 2205 fasteners
- duplex s31803 fasteners
- duplex 2507 fasteners
- ferralium 255 fasteners
- super duplex s32760 fasteners
- s32520 fasteners
Hunan Standard Steel Co.,Ltd as the professional manufacturer of steel pipe and pipe fittings.