products

Electric Resistance Welde Longitudinal Electric Resistance Welded Hot Dip Galvanized Steel Tubes

Basic Information
Place of Origin: CHINA
Brand Name: TORICH
Certification: ISO 9001 ISO 14001 TS 16949 EN 10204.3.1 LR KR
Model Number: GB/T 13793
Minimum Order Quantity: 0.5 Ton
Price: USD 500~1000 per ton
Packaging Details: In bundles in wooden box
Delivery Time: 35-45 days
Payment Terms: L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability: 60000 Tons per year
Detail Information
Product Name: Longitudinal Electric Resistance Welded Hot Dip Galvanized Steel Tubes Keyword: Longitudinal Electric Resistance Welded Hot Dip Galvanized Steel Tubes
Type: Welded ERW Surface: Galvanized Coated
Material: Q195/Q235/Q345 Usage: Construction Structure
Shape: Round Shape Length: 4-12m
OD: 5-711mm WT: 0.5-5.5mm
High Light:

welded steel pipe

,

welding steel tubing


Product Description

GB/T 13793 Longitudinal Electric Resistance Welde Longitudinal Electric Resistance Welded Hot Dip Galvanized Steel Tubes

 

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  

 

 

 

Electric Resistance Welde Longitudinal Electric Resistance Welded Hot Dip Galvanized Steel Tubes 0Electric Resistance Welde Longitudinal Electric Resistance Welded Hot Dip Galvanized Steel Tubes 1

 

Contact Details
Christine Guan

Phone Number : +8618968237897

WhatsApp : +8613736164628