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Quick Details

  • Standard: ASTM, BS, GB, ASTM A53-2007, BS 1387, GB/T 3094-2000
  • Grade: Q195-Q345, Q195, Q215, Q235, Q195-Q235
  • Thickness: 0.7 - 14 mm, 0.7-6.0 mm
  • Section Shape: Round
  • Outer Diameter: 21 - 219 mm, 21.3-219.1 mm
  • Place of Origin: Tianjin, China (Mainland)
  • Secondary Or Not: Non-secondary
  • Application: Fluid Pipe
  • Technique: Hot Rolled
  • Certification: CE
  • Surface Treatment: Galvanized
  • Special Pipe: Thick Wall Pipe
  • Alloy Or Not: Non-alloy
  • Welded Line Type: Longitudinal
  • Model Number: BS1387-1985 ASTM A53 GB/T3091-2001
  • Length: 1-12m/3m/5.5m/5.8m
  • Both ends: threaded
  • Dimensions: 1/2"-8"
  • Welding Line Type: ERW
  • Product name: Hot dipped galvanized steel pipe for sale from china building material

Packaging & Delivery

Packaging Details International Packing standard
Delivery Time 20-30 days after getting your confirmed order

erw tube production line schedule 80 galvanized round pipe for low pressure gas

SizeOD1/2” -8” (21mm-273mm)
Wall Thickness1.3mm-13mm
LengthLength can be customized,Maximum 8M
StandardBS 1139 Metal scaffolding
IS 3589 Steel Pipes for Water and Sewage
IS 1161Grade Steel Tubes For Structural Purposes
IS 3601 Mechanical and general engineering purposes
IS 4270 Steel Tubes for Water Wells
ASTM A 53 Standard Specification for Pipe, Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless
JIS 3444 Carbon steel tubes for general structural purposes
Steel GradeIS 3589, IS 1239, IS:1161 Fe 330, Fe 410)
BS 1387, BS4568, S185, S235, S235JR, S235 G2H, S275, S275JR, S355JRH 
S355J2H, St12, St13, St14, St33, St37, St44, ST52
JIS G3444 STK290,STK400,STK500,STK490,STK540
Steel materialQ195 → SS330,ST37,ST42
Q235 → SS400,S235JR
Q345 → S355JR,SS500,ST52
Zinc Weight40g,60g,80g,100g,120g,270g,400g,500g,550g
7μm ,8μm, 15μm ,20μm ,40μm ,60μm,70μm,80μm
Usage1)low pressure liquid, water, gas, oil, line pipe
2)construction , structure
3)Agriculture fence post , door pipe
Ends1) Plain
2) Beveled
3) Thread with Coupling or cap
4) Chamfer
5) Groove
6) Screw
7)Puch holes as per customer's request  ,etc.
End protector1) Plastic pipe cap
2) Iron protector
Surface Treatment1) Bared
2) Color  Painted (Black / Red / Varnish coating)
3) Galvanized
4) Oiled
5) PE,3PE, FBE, corrosion resistant coating, Anti corrosion coating.
TechniqueElectronic Resistance Welded (ERW )
Hot-dip galvanizing 
MarkingPrinting marks as per customer's request 
Welded Line TypeLongitudinal
Section ShapeRound
InspectionWith Hydraulic Testing, Eddy Current , Infrared Test
Test CertificateManufacturer Test Certificate.
Under Third Party Inspection with Excise Gate Pass to avail Modvat benefit.
Package1) Bundle
2)  Water proof  plastic wrap.
Delivery1) Container
2) Bulk carrier
Port of ShipmentXingang Port, Tianjin, China
Date of DeliveryAccording To The Quantity And Specification Of Each Order
PaymentT/T, L/C at sight etc.
OthersFitting as screws , flanges, caps also can be supplied.
More products

    As a manufacturer of Steel Pipe, our main products are Black Steel Pipe (ERW Steel Pipe), Galvanized Steel Pipe, Black Square / Rectangular Steel Pipe, Galvanized Sqaure/ Rectangular Steel Pipe. 

1. Black Steel Pipe 


2. Galvanized Steel Pipe 


Specifications of our round steel pipe:


3. Black Square/ Rectangular Steel Pipe (Hollow Section ):


4. Galvanized Square / Rectangular Steel Pipe: 

Regular Specification of Square/Rectangular Steel Pipe 

Demention  : 15 mm*15mm to 500mm*500 mm



Production Flow

Black round Steel Pipe:      

Square / Rectangular Steel Pipe: 


Hot-Hot-dip Galvanizing  the black steel pipe & Square/rectangular steel pipe:

     We have own Hot-dip Galvanizing production lines , so all the black pipes we produced  (round & square/ rectangular ) can be galvanized .    


Packing :  Export standard Package by bundle


Overview of Factory

     We Tianjin Hengji Steel Co., Ltd  established in May 2000. Our factory covers a land area of approx.173000sqm.  At present we have 13 ERW Steel Pipe production lines , 4 Hollow Section Steel Pipe lines and 4 hot dip Galvanized pipes lines. 


Our ISO Certificate: 



If you are interested in our Steel Pipe ( Black  steel pipe/ Galvanzied steel pipe/Square  or rectangular steel pipe and Galvanized ones ) , please feel free to contact us. Your any request will get prompt reply .


We are looking forward to cooperating with you. 


Contact Info. 

Eileen Yan 

Skype: eileenyan88   TEl: +86 022-5839 9870-801 FAx: +86 022 58399346 


Black Steel Pipe (ERW Steel Pipe), Galvanized Steel Pipe, Black Square / Rectangular Steel Pipe, Galvanized Sqaure/ Rectangular Steel Pipe. 


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