Professional Steel Pipe Integration Supporting Suppliers Since 1996

Centerway Steel Co., Ltd is a subsidiary of Allianz Steel Group that specializes in the production of steel pipes and pipe fittings, steel inventory, domestic and foreign sales. We are committed to providing one-stop service for steel pipe products to customers around the world.

Centerway has leading technology of steel pipe production and research  at home and abroad, advanced and complete testing facilities .We strictly in accordance with the ISO 9001 quality management system for on-site management, has obtained ISO 9001, ISO 14001, ISO 45001, CE, AAA-level credit rating certification, etc. Our products have been inspected and approved by SGS, BV, MOODY, TUBOSCOPE and other international authoritative third-party organizations

Oilfield Tubulars (OCTG)

Tubing pipe size:

OD:  1.050inch - 4-1/2 inch

Casing pipe size:

OD:  4-1/2inch - 20inch

Drill Pipe

 API 5DP, 2-3/8’’~6-5/8’’, E75/X95/G105/S135.


 API 5CT, 1.9’’-20’’, K55/N80/L80/P110, STC/LTC /BTC

Standard & Material:

API 5CT H40, J55, K55, M65, L80-1, N80-1, N80Q, C90, P110, Q125

Tubing pipe end:

P—plain-end, N—non-upset, with threaded and coupled, U—external-upset, with threaded and coupled, I—whole joint or other special threads

Casing pipe end:

P—plain-end, S—short round thread, L—long round thread, B—buttress thread or other special threads

Drill Pipe:

API SPEC 5DP E75, X95, G105, S135

Pipe Length:

R1, R2, R3 or based on client’s requirements

Additional Products:

Pup joint, Coupling and other OCTG related products

Our advantage:

Rich experienced: Marketing /production/after-sales team, our partners :PDVSA, NIOC, SINOPEC, CNPC.etc

Flexible payment term: T/T. L/C at sight.

Quantity Control: 30,000 tons stockist each year,with 3,0000 square meters warehouse,Strict quality system: Complemented system including QC, logistics and documentation,Authoritative organizations.

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Seamless Steel Tube

Types:Seamless steel tube, Line pipe, Boiler tube, Pressure tube, Fluid Transportation Pipe, Machining Tubes, Heat exchanger and Condenser tube etc

Hot Rolled Seamless Pipe: Size:OD:Φ32-Φ356mm; Thickness:3-50mm; Max Length:50m

Hot Expanded Seamless Pipe: Size:OD:Φ356-Φ1200mm; Thickness:8-50mm

Cold Rolled Seamless Pipe: Size:OD:Φ20-Φ273mm; Thickness:1-32mm

Cold Drawn Seamless Pipe: Size:OD:Φ20-Φ273mm; Thickness:1-26mm; Max Length:25m

Steel Material ASTM A178/179/192/210, A106, EN10216-1/2, DIN17175/1629, JIS G3454, etc.

Steel Grade:A179,A192,GR.A/B/C, P235TR1/2, P235GH, ST45.8, ST37,STB340, STB440,15MoG, 15CrMoG, 16Mn,13CrMo4-5, etc.                  


* The 3rd Party inspection certificate :TUV 3.2, SGS 3.2 ect.

*Competitive p rice: offer the most competitive p rice  in the steel industry, and will try our best  to meet your target price;

*Flexible payment terms: T/T, L/C at sight, 30days , 60days and so on;

Welcome to receive your inquiry, at least, you can have a try to see if our quality and service are better than your firm supplier.

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Stainless Steel Pipe

Supplying Stainless Steel Pipe(SS) and various kinds of steel pipe.

Our products are manufactured using high quality materials. Customers can avail this range of products from us in different sizes, lengths, and specifications.

To make sure best quality product delivery, we check our offered products on various quality parameters under the direction of our skillful quality inspectors.

· ASTM:   A312 TP 304 / 304L / 304H / 316 / 316L / 317 / 317L / 321 / 310 / 347 / 904L etc

· Others:   Duplex, Super Duplex, Monel, Nickel, Inconel, Hastelloy

· Types:   Round, Square, Rectangular

· Size:   Upto 48” NB. (Seamless & Welded)

· Wall thickness:   Sch. 5S to Sch. XXS

Why us:  

· Competitive price: we would try our best to meet your target price;

· Flexible Pay Mode Terms:  L/C (Letter of Credit), T/T (Bank Transfer).

· Short Delivery Time:   As per the client's schedule.

· Perfect Packaging Details:   Durable and safe packaging.

· Prompt feedback: all emails and questions would be replied within 2 working hours;

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Alloy Steel Pipe

Alloy Seamless Steel Pipe

Size:Outside Diameter: 1/8'' ~ 26'';Wall Thickness: SCH 30, 30, 40, 60, 80, 120, 140, 160, XS, XXS, STD; Length: Single Random, Double Random, Cut Length max to 23m

Alloy Welded Steel Pipe

Size:Outside Diameter: OD:6-720MM,WT:0.5-120MM, Length: Single Random, Double Random, Cut Length max to 23m

Standard & Grade:ASTM A691, ASTM A530/A530M, ASTM A335 (ASME SA335), ASTM A387, ASTM A213/213M etc, DIN17175-79, JIS3467-88,GB5310-95

Ends :Plain End, Beveled End, Thread End

Usage:In Petroleum, Aerospace, Chemical, Power, Boilers, Military Industry

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Welded Steel Pipe&Tube




Why Choose Us

China's largest welded pipe manufacturer and include 5 factories.

We specialize in steel pipes/tubes such as ERW, LSAW, SSAW pipe

More than 20 years experience in this field, since 1996.

Production capacity over 2 million tons per year.

The export market covers more than 100 major countries and regions around the globe.

Stock more than 5000 tons per month in different materials and sizes.

Involved in more than 100 projects each year, covering the oil and gas pipeline, drilling, offshore, energy, construction industries.

Quality assurance: SGS, DNV, BV, TUV, API, ISO 9001:2000.

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Coating Steel Pipe

Dealing with Coating Steel pipes (SSAW/LSAW/ERW/SMLS) service, stockist and logistics, with ASTM, JIS, DIN, EN, API, BS AS/NZ standards, supplying PEMEX,  PDVSA, etc

Bare pipe





Production Range:

WT: 3mm - 25mm

WT: max 50mm

OD: 1/8"-24"       
WT: max 26.5mm

OD: 1/8"-36"        
WT: 1.25mm - 50mm


· Random Length   /   Fixed Length   /   SRL    /   DRL


Mechanical Tubing
Liquid Transport Steel Pipe
General structure, mechanical structure
Transport liquid, gas, oil


1.Chemical Component Analysis      2.Mechanical Properties (Ultimate tensile strength, Yield strength, Elongation)
3.Technical Properties (Flattening Test, Flaring Test, Bending Test, Hardness Test, Blow Test, Impact Test etc)
4.Exterior Size Inspection   5.Nondestructive Test (Ultrasonic flaw detector, Eddy current flaw detector)
6.Hydrostatic Test

Coating Type:

Fusion bond Epoxy Coating/ Coal Tar Epoxy /3PE /2PE/FBE/2FBE/3PP Varnish Coating
Bitumen Coating  / Black Oil Coating,Cement coated as per customer's requirement

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Pipe Fittings

Size Range:

Flange:1/2” - 120” ( DN 15 - DN 3000),Rating: 150, 300, 400, 600, 900, 1500, 2500;

Elbow:Size Range: 1/2” - 24” ( DN 21.3 - DN 610) for Seamless;26” - 96” ( DN 660 - DN 2438.4) for Welded.   

Reducer:Size Range: 1/2″ to 24″

Tee:Size Range: 1/2” - 24” ( DN 21.3 - DN 610) for Seamless;26” - 72” ( DN 660 - DN 1828.8) for Welded.           

Material: Carbon Steel ASTM A234 WPB,Alloy Steel ASTM A234 WP1, WP5, WP9, WP11, WP22,Stainless Steel ASTM A403 304/316

Type: Seamless / Welded

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Centerway's Product categories include gate valves, check valves, globe valves, ball valves, plug valves, butterfly valves, general valves, special valves, non-standard valves and valve accessories, etc., and are widely used in petroleum, chemical industry, electric power, mining, metallurgy, steel, coal preparation , alumina, papermaking, pharmaceuticals, sewage treatment and other industries, the products are exported to Southeast Asia, the Middle East, Europe, South America, Africa and other parts of the world.

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Product Value-Added Service

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Own Production Lines With Different Product, Factory Direct Sales, Wholesales Price
We have our R&D platform.  Centerway Steel build Different product lines in each factory, Including 3 sets of hot-rolled production lines,10 cold rolling production lines, 4 oil casing production lines,API 5DP drill pipe production line,HFW and ERW welded pipe production lines, JCOE and HME production lines,8 spiral steel pipe production lines and 2 anti-corrosion and heat preservation production lines,stainless seamless&welded pipe production lines etc,these lines we can provide steel pipe cover different size,standard, material, length etc. In the R&D department, we enter into a strict quality control standard in each manufacturing process. Such as production, packing, transportation, etc. To ensure reliable product quality. To better serve the welded steel pipe global market. Meanwhile, to achieve high product quality. 

Latest News

boiler tubes,semless line pipe,seamless pipe manufacturers

Some knowledge points about seamless pipes

The gray spots of different sizes on the surface of galvanized seamless steel pipes are the color difference of galvanizing, which is a problem in the current galvanizing industry. It is mainly related to the trace elements contained in the steel pipe itself and the components in the zinc bath. The stains do not affect the anti-corrosion performance of the steel pipe, but only differ in appearance. On the surface of each galvanized seamless steel pipe, there are gradually obvious raised marks, which are all zinc. The galvanized seamless steel pipe is taken out of the zinc pot, and the zinc liquid flows down the pipe wall and then cools and solidifies.
  • What are the characteristics of seamless pipes

    The promotion and application of precision seamless pipes is of great significance to saving steel, improving processing efficiency, and reducing processing procedures or equipment investment. It can save costs and processing time, increase output and material utilization, and at the same time help improve product quality, reduce costs, and improve economic benefits. Generally, precision seamless pipes are used in industries with high precision requirements, while seamless pipes are mostly used in industries without precision requirements. After all, the price of precision seamless pipes of the same specifications is higher than that of seamless pipes.
  • Types of seamless steel pipe inspections, which ones are the key to inspect

    Hot-rolled seamless steel pipe inspection: including the inspection of medium and low pressure boiler steel pipes, general performance steel pipes, high pressure boiler steel pipes, stainless steel pipes, alloy steel pipes, geological steel pipes, petroleum cracking steel pipes and other hot-rolled seamless steel pipes. Seamless steel pipe cold-rolled seamless steel pipe inspection: including general structural steel pipes and seamless steel pipes for mechanical structures, seamless pipes for high pressure boilers, seamless pipes for low pressure boilers, seamless pipes for cold drawn or cold precision steel pipes, seamless pipes for transmission fluids, seamless pipes for geological drilling, seamless pipes for fertilizers, hydraulic cylinder precision inner diameter seamless pipes, seamless pipes for fertilizers, petroleum cracking pipes, seamless pipes for ships, various alloy cold-rolled seamless steel pipes for inspection
  • What are the inspection items for ASTM standard seamless pipes?

    What are the inspection items for American standard seamless pipes? There are many quality inspection items for American seamless steel pipes, mainly including physical and chemical properties, composition detection, size and process performance. This article takes the ASTM A450/A450M standard for steel pipes exported to the American standard as an example. Each requirement in this standard is activated by a total of 34 ASTM steel pipe standards, including ordinary seamless splicing and welded steel pipes, as well as American standard seamless pipes for steam boilers, ironmaking, sanitation, natural gas, and natural gas water supply pipelines. In the standard, each requirement is divided into mandatory and non-mandatory. Non-mandatory requirements are mainly inspected through agreements between supply and demand parties.


Our partners are throughout southeast Asia, the Middle East, Europe, Africa, South America, Oceania,and more than 80 countries and regions. We also provide many steel pipe products and services to the worlds top 500 petroleum and gas 




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