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TORICH Dia 4-1200mm 316 / 316L Stainless Steel Pipes Welded Steel Tube for Liquid GB/T 12771

Minimum Order Quantity : 5 Ton Price : USD 2000-3000/Ton
Packaging Details : Packing in wooden box,hexagonal bundles or other seaworthy ways. Delivery Time : 30 days
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram Supply Ability : 30000 Ton/Year
Place of Origin: Zhejiang China Brand Name: TORICH
Certification: ISO 9001 ISO 14001 TS 16949 Model Number: GB/T 12771

Detail Information

Product Name:: TORICH Diameter 4-1200mm Welded 316 / 316L Stainless Steel Pipes For Liquid GB/T 12771 Material:: 304/304L 316/316L
Surface:: Polishing Application:: Liquid Delivery
Shape:: Round OD:: 4-1200mm
WT:: 0.3-200mm Length:: 2-12.5m
High Light:

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electric resistance welded steel tube

Product Description

TORICH Diameter 4-1200mm Welded 316 / 316L Stainless Steel Pipes for Liquid GB/T 12771

 

SPEC:

 

Material:304/304L 316/316L

Diameter : 4-1200mm

Wall thickness : 0.3-200mm

Length : 2-12m Upon customer's request

 

Tolerance:

According to the following tables or customers’ request.

Table 1 Tolerance of OD

Classification D Permissible Tolerance
A B
H All Dimensions ±0.5% or ±0.20 ±0.75% or ±0.30
T <40 ±0.20 ±0.30
≥40~<65 ±0.30 ±0.40
≥65~<90 ±0.40 ±0.50
≥90~<168.3 ±0.80 ±1.00
≥168.3~<325 ±0.75%D ±1%D
≥325~<610 ±0.6%D ±1%D
≥610 ±0.6%D ±0.7%D or ±10

WC

SP

<40 ±0.15 ±0.20
≥40~<60 ±0.20 ±0.30
≥60~<100 ±0.30 ±0.40
≥100~<200 ±0.4%D ±0.5%D
≥200 ±0.5%D ±0.75%D

 

Table 2 Tolerance of WT

Nominal WT Permissible Tolerance
≤0.5 ±0..10
>0.5~1.0 ±0.15
>1.0~2.0 ±0.20
>2.0~<4.0 ±0.30
≥4.0 ±10%S

 

Table 3 Bending degree

Out diameter/mm Bending degree/(mm/m)
≤108 ≤1.5
>108~325 ≤2.0
>325 ≤2.5

 

Table 4 Mechanical properties of steel tubes.

Number New Brand Ola Brand

non-proportional extension strength Diameter 4-1200mm Welded 316 / 316L Stainless Steel Pipes for Liquid GB/T 12771/

MPa

tensile strength

Diameter 4-1200mm Welded 316 / 316L Stainless Steel Pipes for Liquid GB/T 12771/

MPa

elongation after fracture

A/

%

Heat treatment condition Non-heat treatment condition
Not less than
1 12Cr18Ni9 1Cr18Ni9 210 520 32 25
2 06Cr19Ni10 0Cr18Ni9 210 520
3 022Cr19Ni10 00Cr19Ni10 180 480
4 06Cr25Ni20 0Cr25Ni20 210 520
5 06Cr17Ni12Mo2 0Cr17Ni12Mo2 210 520
6 022Cr17Ni12Mo2 00Cr17Ni14Mo2 180 480
7 06Cr18Ni11Ti 0Cr18Ni10Ti 210 520
8 06Cr18Ni11Nb 0Cr18Ni11Nb 210 520
9 022Cr18Ti 00Cr17 180 360 20 --
10 019Cr19Mo2NbTi 00Cr18Mo2 240 410
11 06Cr13Al 0Cr13Al 177 410
12 022Cr11Ti -- 275 400 18 --
13 022Cr12Ni -- 275 400 18 --
14 06Cr13 0Cr13 210 410 20 --
 

Characteristic:

Good concentricity

Good surface quality

Good OD and ID tolerance

High Precision

Stable quality

Smooth Roughness

TORICH QUALITY ASSURANCE

 

Processing:Single-sided automatic arc welding or Double-sided automatic arc welding

 

Technical Delivery Conditions:Heat treatment+pickling

 

Widely used in the field of:Liquid delivery

 

Product Images:

 

Diameter 4-1200mm Welded 316 / 316L Stainless Steel Pipes for Liquid GB/T 12771Diameter 4-1200mm Welded 316 / 316L Stainless Steel Pipes for Liquid GB/T 12771Diameter 4-1200mm Welded 316 / 316L Stainless Steel Pipes for Liquid GB/T 12771Diameter 4-1200mm Welded 316 / 316L Stainless Steel Pipes for Liquid GB/T 12771

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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