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TORICH GB/T 14975 Seamless Stainless Steel Tubes For Structure

Minimum Order Quantity : 1 Ton Price : negotiable
Packaging Details : In plywood case,In wooden box. Delivery Time : 30 days
Payment Terms : L/C, D/A, D/P, T/T, Western Union, MoneyGram Supply Ability : 30000 tons/year
Place of Origin: China Brand Name: TORICH
Certification: ISO 9001,ISO 14001,TS 16949 Model Number: GB/14975

Detail Information

Keyword: Seamless Stainless Steel Tubes For Structure Type: Seamless Stainless Steel Tubes
Surface: Polish Material: 304 316
Shape: Round Length: 4-12M
OD: 5-450mm WT: 0.5-50mm
High Light:

stainless steel round tube

,

stainless tube steel

Product Description

 

TORICH GB/T 14975 Seamless Stainless Steel Tubes For Structure

 

Table 1 The Tolerance of Nominal Outer Diameter and Wall Thickness Unit:mm

Hot Roll(Extrusion,Expansion)Steel Tube Cold Drawn(Roll) Steel Tube
Diamension Tolerance Diamension Tolerance
Ordinary Level PA High Level PC Ordinary Level PA High Level PC

Nominal Outer Diameter

D

<76.1 ±1.25%D ±0.60

Nominal Outer Diameter

D

<12.7 ±0.30 ±0.10
76.1~<139.7 ±0.80 12.7~<38.1 ±0.30 ±0.15
139.7~<273.1 ±1.5%D ±1.20 38.1~<88.9 ±0.40 ±0.30
88.9~<139.7 ±0.9%D ±0.40
273.1~<323.9 ±1.60 139.7~<203.2 ±0.80
203.2~<219.1 ±1.10
≥323.9 ±0.6%D 219.1~<323.9 ±1.60
≥323.9 ±0.5%D

Nominal Wall Thinckness

S

All Wall Thickness

+15%S

-12.52%S

±12.5%S

Nominal Wall Thinckness

S

All Wall Thickness

+12.5%S

-10%S

±10%S

Table 2 Tolerance of Minimum Wall Thickness Unit:mm

Production Method Diamension Tolerance
Ordinary Level PA High Level PC

Hot Roll(Extrusion,Expansion)Steel Tube

W-H

Smin<15

+27.5% Smin

0

+25% Smin

0

 

Smin≥15

+35% Smin

0

Cold Drawn(Roll) Steel Tube

W-C

All Wall Thickness

+22% S

0

+20% S

0

 

Table 3 Grade and Chemical Component

No. Unified Digital Code Grade Chemical Component(Quality Fraction)/%
C Si Mn P S Ni Cr Mo Cu N
1 S30210 12Cr18Ni9 0.15 1.00 2.00 0.040 0.030 8.00~10.00 17.00~19.00 - - 0.10
2 S30408 06Cr19Ni10 0.08 1.00 2.00 0.040 0.030 8.00~11.00 18.00~20.00 - - -
3 S30403 022Cr19Ni10 0.030 1.00 2.00 0.040 0.030 8.00~12.00 18.00~20.00 - - -
4 S30458 06Cr19Ni10N 0.08 1.00 2.00 0.040 0.030 8.00~11.00 18.00~20.00 - - 0.10~0.16
5 S30478 06Cr19Ni9NbN 0.08 1.00 2.50 0.040 0.030 7.50~10.50 18.00~20.00 - - 0.15~0.30
6 S30453 022Cr19Ni10N 0.030 1.00 2.00 0.040 0.030 8.00~11.00 18.00~20.00 - - 0.10~0.16
7 S30908 06Cr23Ni13 0.08 1.00 2.00 0.040 0.030 12.00~15.00 22.00~24.00 - - -
8 S31008 06Cr25Ni20 0.08 1.50 2.00 0.040 0.030 19.00~22.00 24.00~26.00 - - -
9 S31252 015Cr20Ni18Mo6CuN 0.02 0.80 1.00 0.030 0.010 17.50~18.50 19.50~20.50 6.00~6.50 0.50~1.00 0.18~0.22
10 S31608 06Cr17Ni12Mo2 0.08 1.00 2.00 0.040 0.030 10.00~14.00 16.00~18.00 2.00~3.00 - -
11 S31603 022Cr17Ni12Mo2 0.030 1.00 2.00 0.040 0.030 10.00~14.00 16.00~18.00 2.00~3.00 - -

 

Table 4 Mechnical Properties

No. Serial number

Steel

Grade

Mechnical Properties Hardness

tensile strength

Rm/MPa

elongation strength

Rp0.2/MPa

elongation after fracture

A/

HBW/HV/HRB
1 S30210 12Cr18Ni9 520 205 35 192HbW/200HV/90HRB
2 S30438 06Cr19Ni10 520 205 35 192HbW/200HV/90HRB
3 S30403 022Cr19Ni10 480 175 35 192HbW/200HV/90HRB
4 S30458 06Cr19Ni10N 550 275 35 192HbW/200HV/90HRB
5 S30478 06Cr19Ni9NbN 685 345 35 -
6 S30453 022Cr19Ni10N 550 245 40 192HbW/200HV/90HRB
7 S30908 06Cr23Ni13 520 205 40 192HbW/200HV/90HRB
8 S31008 06Cr25Ni20 520 205 40 192HbW/200HV/90HRB
9 S31252 015Cr20Ni18Mo6CuN 655 310 35 220HbW/230HV/96HRB
10 S31608 06Cr17Ni12Mo2 520 205 35 192HbW/200HV/90HRB
11 S31603 022Cr17Ni12Mo2 480 175 35 192HbW/200HV/90HRB
12 S31609 07Cr17Ni12Mo2Ti 515 205 35 192HbW/200HV/90HRB
13 S31668 06Cr17Ni12Mo2N 530 205 35 192HbW/200HV/90HRB
14 S31653 022Cr17Ni12Mo2N 550 245 40 192HbW/200HV/90HRB
15 S31658 06Cr17Ni12Mo2N 550 275 35 192HbW/200HV/90HRB
16 S31688 06Cr18Ni12Mo2Cu2 520 205 35 -
17 S31683 022Cr18Ni14Mo2Cu2 480 180 35 -
18 S31782 015Cr21Ni26Mo5Cu2 490 215 35 192HbW/200HV/90HRB

 

Table 5 Testing items and sampling quantity of steel tubes

Number Testing items Sampling quantity
1 Chemical composition 1 sample from each furnace
2 Tensile test 1 sample from each of two steel tubes on each batch
3 Hardness test 1 sample from each of two steel tubes on each batch
4 Ultrasonic testing ALL
5 Hydraulic test ALL

 

TORICH GB/T 14975 Seamless Stainless Steel Tubes For Structure 0

 

 

 

 

 

 

 

 

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