With more than 30 years' of Structural pipe production experience and participation in government projects, we fullly comprehend the materials, our spiral construct pipe fully comply with API, ASTM, GRA/GRB, standard etc.

Structural steel pipe , welded structural pipe , spiral construct pipe


Structural steel pipe


Longitudinally welded pipe
Longitudinal welded steel pipe
Custom Longitudinal steel pipe
Structure Longitudinally welded pipe
Large diameter Longitudinal welded pipe

What we offering to you:

Longitudinal Girth Welded Steel Pipes:
The pipes with outside diameter from 508mm(20inch) to 3556mm(140inch),
maximum length from 1500mm(59.055inch)up to 3000mm(118.110inch)
The pipes with wall thickness diameter from 7mm(0.276inch) up to 40mm(1.575inch)

Longitudinal Straight seam welded steel pipe:
The pipes with outside diameter from 508mm(20inch) to 2032mm(80inch),
maximum length from 6000mm(236.220inch)
The pipes with wall thickness diameter from 7mm(0.276inch) up to 22mm(0.866inch)

Longitudial Welded Stell Pipe By Customized:
The pipes with
outside diameter from 300mm(11.811inch) to 3500mm(137.795inch),
maximum length from 800mm(31.496inch)up to 1500mm(59.055inch)
The pipes with
wall thickness diameter from 20mm(0.787inch) up to 80mm(3.150inch)

We will strictly test and check our products, such as steel surface quality should be smooth, not permit folding, cracks, delamination, take the existence of welding defects. Allowed no more than pipe wall thickness of the surface of a negative bias is zoned Road, scratches, weld dislocation, burns and other minor flaw. Allow welds and inner wall thickening seam welding bars there.


welding steel pipe increasing number of varieties and specifications, and in a growing number of areas instead of non-Steel Pipe, than the seamless steel pipe welded steel pipe and low cost, high production efficiency.


seamless structural pipe

carbon seamless structural pipe

1).Standard: ASTM A53,ASTM A106, DIN17175. DIN1626.GB/T8162-99,GB/T8163-99
2).Steel Grade: 10#. A53-A A106-A A179-C. St37 St37-2 St35.8. 20#. ASTM 
A106-B A53-B A178-c. St458 St42-2 St45-4. 45#. 
ASTM A1045.Ck45. 16mn. A210-C.St52.2 St52.
3).Size: WT: 3-60mm OD: 34-650mm Length: 2-16m
4).Usage. Petroleum, smelting, food stuff, power paper making, chemical 
equipment, exchange gas ,metallurgy ship, building construction.
5).End: Bevelled end or plain end 
6).Marking: Size, standard, and heat number, or as customers' required 
7).Painting: Varnish painting or painting black coating on the pipes or as
per the clients' request 
8).Package: Packing in bundles, caps at both ends, or as per the clients'request.



PE pipeline

3PE Anti-Corrosion Pipe

 Copyright (c)2012 LongtaidiIf you do not find the information you need, Click Here  Get Support

New Update Pipe List

    Carbon Seamless Steel PipeOut diameter:19.05-114.3mm;Wall thickness:2-14mm.

    Precision cold drawn steel pipe technology,(2) Brand : NEWSINDA Steel Pipe (Manufacturer ) (3) Specification: OD :3/8”-20” WT:SCH5-SCH40-SCH80-SCH160-XXS .

    Specification Octal offers various of carbon steel pipes including seamless, welded (ERW EFW, LSAW, SSAW) steel pipes for the mining industries. To check differences between seamless and welded pipe (.

    Ship Pipes - KR,ABS,GL,COS,DNV,LR,BV,MK ship pipe.

    Grades covered by API 5L specification are A25, A, B, X42, X46, X52, X56, X60, X65, X70, X80. For X52 X60 X70 X80 line pipe, the two digit number following the "X" indicates the minimum yield strength of pipe produced to this grade..
Contact Us Online To Serve You Better

Hot Click PRO

      Structural steel pipe,dimensional tolerances:GB / T 8162,DIN1629,ASTM A53,ASTM A106.Main material: 10,20,35,45, Q345,15CrMo, 12Cr1MoV, A53A, A53B, SA53A, SA53BEnglish Name: Seamless steel tubes for structural purposesImplementation of .
      High Pressure Fertilizer Pipes,Structural Pipes.
      NEW SINDA structural steel pipe and seamless steel pipes.
      Buried structure steel pipe calculations .
      A53A/A53B、SA53A/B,A500 B/C Structural Steel Pipe,Steel PipeWelded - Uncoated pipe: ASTM A500 Grade B/A53B (non-hydro test)Black Plain End/Galvanized - ASTM A-53 GD A - up to 2", ASTM A-53 GB B - 2" and aboveSeamless - ASTM A-106 GD B.
      Performance of structure steel pipe application.
      structure pipes,fluid tubes,boiler tubes,chemical pipe.
      seamless pipe price,welded pipe price,Structural steel tubes Price Quotes.