Company Details
  • Torich International Co.,Ltd--The Steel Tube Maker

  •  [Zhejiang,China]
  • Business Type:Distributor/Wholesaler , Manufacturer , Service , Trade Company
  • Main Mark: Africa , Americas , Asia , Caribbean , East Europe , Europe , Middle East , North Europe , Oceania , Other Markets , West Europe , Worldwide
  • Exporter:31% - 40%
  • Certs:GB, ISO9001, ISO14001
  • Description:Steel Tubes & Pipes,Welded Steel Tubes&Pipes,Hot Dip Galvanized Steel Tubes&Pipes
Torich International Co.,Ltd--The Steel Tube Maker Steel Tubes & Pipes,Welded Steel Tubes&Pipes,Hot Dip Galvanized Steel Tubes&Pipes
Home > Products > Welded Steel Pipe > Welded Hot Dip Galvanized Steel Tubes&Pipes

Welded Hot Dip Galvanized Steel Tubes&Pipes

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    Payment Type: L/C,T/T,D/P,Paypal,Money Gram,Western Union
    Incoterm: FOB,CFR,CIF,FCA,CPT
    Min. Order: 0.5 Ton
    Delivery Time: 35 Days

Basic Info

Model No.: GB/T 13793

Additional Info

Packaging:  In bundles in wooden box

Productivity: 60000 Tons per Year

Brand: TORICH

Transportation: Ocean,Land,Air

Place of Origin: China

Supply Ability: 60000 tons per year

Certificate: ISO 9001 ISO 14001 TS 16949 EN 10204.3.1 LR KR

HS Code: 7306900090

Port: Ningbo,Shanghai

Product Description

Welded Hot Dip Galvanized Steel Tubes&Pipes



Application:Suitable for mechanical, construction and other structural purposes, and the straight seam Welded Steel Pipe with an outer diameter of not more than 711mm, can also be applied to general welded steel pipe for fluid transportation

size:L--4~12m OD--5~711mm WT--0.5~5.5mm

Grade:10,20,Q195,Q215,Q213,Q275

Manufacture method:The steel pipe shall be made of hot rolled steel strip or cold rolled steel strip by high frequency resistance welding method

Delivery State:Steel tube should be welding or heat treatment state delivery

Surface Quality:The internal and external surfaces of the steel tube are not allowed to have cracks, scabs, folds, delaminations, laps, and burns. Allows for scribes, scratches, misalignment of welds, burns, oxide scales, and external burr removal traces that are not more than a negative wall thickness deviation

Tolerance of Outer Diameter Unit:mm

Outer Diameter(D) General Precesion(PD.A)a Higher Precision(PD.B) High Precision(PD.C)
5-20 ±0.30 ±0.15 ±0.05
﹥20-35 ±0.40 ±0.20 ±0.10
>35-50 ±0.50 ±0.25 ±0.15
>50-80 ±1%D ±0.35 ±0.25
>80-114.3 ±0.60 ±0.40
>114.3-168.3 ±0.70 ±0.50
>168.3-219.1 ±0.80 ±0.60
>219.1-711 ±0.75%D ±0.5%D
a Not apply for steel pipe for roller of belt conveyor


Tolerance of Wall Thickness Unit:mm

Wall Thickness(t) General Precesion(PD.A)a Higher Precision(PD.B) High Precision(PD.C) Non-uniform Wall Thicknessb
0.50-0.70 ±0.10 ±0.04 ±0.03 ≤7.5%t
>0.70-1.0 ±0.05 ±0.04
>1.0-1.5 ±0.06 ±0.05
>1.5-2.5 ±10%t ±0.12 ±0.06
>2.5-3.5 ±0.16 ±0.10
>3.5-4.5 ±0.22 ±0.18
>4.5-5.5 ±0.26 ±0.21
>5.5 ±7.5%t ±5.0%t

a Not apply for steel pipe for roller of belt conveyor

b Not apply for General Precesion steel tube. Non-uniform Wall Thickness means the difference between maximum and minimum values of measured wall thickness on the same cross section.


Weight coefficient of galvanized steel pipe

Wall thickness t/mm 1.2 1.4 1.5 1.6 1.8 2.0 2.2 2.5 2.8 3.0 3.2 3.5
Coefficient c A 1.106 1.091 1.085 1.080 1.071 1.064 1.058 1.051 1.045 1.042 1.040 1.036
Coefficient c B 1.085 1.073 1.068 1.064 1.057 1.051 1.046 1.041 1.036 1.034 1.032 1.029
Coefficient c C 1.064 1.055 1.051 1.048 1.042 1.038 1.035 1.031 1.027 1.025 1.022 1.020
Wall thickness t/mm 3.8 4.0 4.2 4.5 4.8 5.0 5.4 5.6 6.0 6.5 7.0 8.0
Coefficient c A 1.034 1.032 1.030 1.028 1.027 1.025 1.024 1.023 1.021 1.020 1.018 1.016
Coefficient c B 1.027 1.025 1.024 1.023 1.021 1.020 1.019 1.018 1.017 1.016 1.015 1.013
Coefficient c C 1.020 1.019 1.018 1.017 1.016 1.015 1.014 1.014 1.013 1.012 1.011 1.010
Wall thickness t/mm 9.0 10.0 11.0 12.0 12.7 13.0 14.2 16.0 17.5 20.0

Coefficient c A 1.014 1.013 1.012 1.011 1.010 1.010 1.009 1.008 1.007 1.006

Coefficient c B 1.011 1.010 1.009 1.008 1.008 1.008 1.007 1.006 1.006 1.005

Coefficient c C 1.008 1.008 1.007 1.006 1.006 1.006 1.005 1.005 1.004 1.004




hanguan84IMG_20160525_123008

PIC_20160927_132010_0C0PIC_20161125_110615_AAD



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Product Categories : Welded Steel Pipe

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  • Welded Hot Dip Galvanized Steel Tubes&Pipes
  • Welded Hot Dip Galvanized Steel Tubes&Pipes
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