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EFW ERW Single Double Seam Welded Pipe

Minimum Order Quantity : 1 ton Packaging Details : In hexagonal bundles or wooden box
Delivery Time : 30-45days Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram
Supply Ability : 60000 Ton per year
Place of Origin: zhejiang, China Brand Name: Torich
Certification: ISO9001; ISO14001; TSI16949 Model Number: JIS G3468

Detail Information

Product Name: 1/2" -48" Big Size Large Size EFW ERW Double Seam Welded Pipe Tolerance: ±10%
Section Shape: Round Grade: SUS 304,TP304 SUS304L TP304L SUS316 TP316 SUS316
Category: Welded Steel Pipe Brand: Torich
Certificate: ISO9001,ISO14001,TS16949 Place Of Origin: China
High Light:

EFW Seam Welded Pipe

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ERW Seam Welded Pipe

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Torich Seam Welded Pipe

Product Description

EFW ERW Single Double Seam Welded Pipe

 

 

Quick detail:

Single Seam: Outside Diameter 6-914mm Wall thickness 0.5-60mm

Double Seams:Outside Diameter 630-1524mm Wall thickness 2-80mm

Circular Seam:Outside Diameter 630 mm above Wall thickness 2-100

 

Material

SUS 304,TP304 SUS304L TP304L SUS316 TP316 SUS316 TP316L.

 

Calculation Formula

0.02491

0.02482

0.02513

 

Application : Electric Power

Oil Refining

Nuclear Power

Drinking Water

Offshore Engineering &Shipbuilding

Natural Gas

Paper making

Construction

 

 

 

Description:

 

LARGE DIAMETER PIPE Available material

 

Material  
Austenitic Stainless Steel 310S, 309S,316L,321,304L,304
Duplex S,32750,S32760,S31803,S32205
Nickel-Base Alloy N08904,N06600,N08825
Copper Nickel Alloy C70600,C70620
Ferrite 430,409L
Other Special Material 254SMO,253MA
High-Temp Material 310S,309S,S30815
Titanium Alloys TA2,TA10,TC4

 

Production process:

Steel Coil

Re-test

Flat Open and Transverse Shear

Shear Longitudinal Shear

Edge Planning and Milling

Butt Welding of plate

Forming(Bending/Reeling)

End Squaring&Tack Welding

Welding Seam Cleaning

Automatic welding

Radiographic Test

Solution Treatment

Rounding

Straightening

End Facing Treatment

Hydrostatic Test

Pickling Passivation

Rinse and Dry

Radiographic Test

Finished Production Testing

Marking

Packing

Finished Product Warehousing

Shipping

 

Standard:

GB/T 12771

 

Delivery condition:

Heat treatment

Welded

Standard Item Outside Diameter Thickness

Roundness

 

Straightness Length
GB/T 12771 Heat treatment   High Class General
<50 ±0.20 ±0.3

>0.5-1.0,±0.15

>1.0-2.0

±0.20

>2.0-4.0

±0.3

±10%

Not exceed the OD tolerance

t/D≤3% ≤1.5%D

OD ≤ 108 mm,≤1.5mm/m

> 108-325mm

≤2.0mm/m

> 325mm

≤2.5mm/m

 

3000-9000mm,

Length tolerance is 0,+20mm

 

≥40-<65 ±0.30 ±0.40
≥65-<90 ±0.40 ±0.50
≥90-<168.3 ±0.80 ±1.0
>168.3-<325 ±0.75% D ±1% D
≥325-<610 ±0.6% D ±1% D
>610 ±0.6% D ±0.7% or± 10 Chose min value
Welded All sizes ±0.5% D or ±0.20 chose the bigger one ±0.75% D or ±0.30 chose the bigger one
 

Product Pictures

EFW ERW Single Double Seam Welded Pipe 0

 

EFW ERW Single Double Seam Welded Pipe 1

 

Company Introduction

EFW ERW Single Double Seam Welded Pipe 2

QUALITY CONTROL

 

1. Incoming Raw Material Inspection

2. Raw Material Segregation to avoid steel grade mix-up
3. Heating and Hammering End for Cold Drawing
4. Cold Drawing and Cold Rolling, on line inspection
5. Heat Treatment, +A, +SRA, +LC, +N, Q+T
6. Straightening-Cutting to specified length-Finished Measuring Inspection
7. Machanical Testing in own labs with Tensile Strength, Yield Strength, Elongation, Hardness, Impact, Mictrostruture etc
8. Packing and Stocking

 

100% of our steel tubes are dimensionally checked
100% of our steel tubes are visually checked to assure they have a perfect surface condition and no surface defects.
100% eddy current test and ultrosonic test to eliminate longitudinal and transversal defects

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