Name: 321 302 310S Stainless Steel Welded Steel Tube for Mechanical Structure GB/T 12770
Brand: TORICH INTERNATIONAL LIMITED
SKU: GB 12770
Price: 2,500.00 USD
Availability: InStock

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321 302 310S Stainless Steel Welded Steel Tube for Mechanical Structure GB/T 12770

welding steel tubing

electric resistance welded steel tube

Place of Origin:

China

Brand Name:

TORICH

Certification:

ISO 9001 ISO 14001 TS 16949

Model Number:

GB 12770

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Product Details

Product Name:

Welded Stainless Steel Tubes For Mechanical Structure GB/T 12770

Material:

304/304L 316/316L 321 302 310S

Surface:

Polishing

Application:

Mechanical Structure Purpose Or Decoration

Shape:

Round

OD:

4-1200mm

WT:

0.3-200m

Length:

2-12m

Highlight:

welding steel tubing

electric resistance welded steel tube

Payment & Shipping Terms

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

40000 Ton/Year

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Product Description

Welded Stainless Steel Tubes for Mechanical Structure GB/T 12770

SPEC:

Material:304/304L 316/316L 321 302 310S

Size Range:OD:4-1200mm

WT:0.3-200mm

General Length:2-12m

Tolerance:

According to the following tables or customers’ request.

Table1Tolerance of OD

Classification	Nominal OD	Permissible Tolerance
Classification	Nominal OD	PC	PB	PA
H T	＜25	±0.20	±0.15	±0.10
	≥25~＜40	±0.30	±0.25	±0.20
	≥40~＜63	±0.50	±0.30	±0.25
	≥63~＜90	±0.60	±0.50	±0.40
	≥90~＜159	±0.80	±0.65	±0.50
	≥159~＜300	±0.8%D	±0.7%D	±0.5%D
	≥300~＜610	±0.1%D	±0.8%D	±0.6%D
	≥10	protocol	protocol	protocol
WC SP	＜25	±0.15	±0.12	±0.10
	≥25~＜40	±0.20	±0.15	±0.13
	≥40~＜50	±0.20	±0.18	±0.15
	≥50~＜60	±0.25	±0.20	±0.18
	≥60~＜90	±0.30	±0.28	±0.25
	≥90~＜100	±0.40	±0.35	±0.30
	≥100~＜200	±0.5%D	±0.4%D	protocol
	≥200	protocol	protocol	protocol

Table 2Tolerance 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

Nominal Wall Thickness/mm	Bending Degree/(mm/m)
≤108	≤1.0
＞108~325	≤1.5
＞325	≤2.5

Table4 The density of the steel and Calculation of Theoretic Weight

No.	Steel Grade	Density/(kg/dm³)	The formula after conversion
1	12Cr18Ni9	7.93	W=0.02491S(D-S)
2	06Cr19Ni10	7.93	W=0.02491S(D-S)
3	022Cr19Ni10	7.90	W=0.02482S(D-S)
4	06Cr25Ni20	7.98	W=0.02507S(D-S)
5	06Cr17Ni12Mo2	8.00	W=0.02513S(D-S)
6	022Cr17Ni12Mo2	8.00	W=0.02513S(D-S)
7	06Cr18Ni11Ti	8.03	W=0.02523S(D-S)
8	06Cr18Ni11Nb	8.03	W=0.02523S(D-S)
9	022Cr22Ni5Mo3N	7.80	W=0.02450S(D-S)
10	022Cr23Ni5Mo3N
11	022Cr25Ni7Mo4N
12	022Cr18Ti	7.70	W=0.02491S(D-S)
13	019Cr19Mo2NbTi	7.75	W=0.02435S(D-S)
14	06Cr13Al
15	022Cr11Ti
16	022Cr12Ni
17	06Cr13

Table A.1 Comparison table of stainless steel brands in each standard

Number	GB/T 20878-2007				ASTM A 959-09	JIS G 4303-2005 JIS G 4311-1991	ISO/TS 15510: 2003 ISO 4955: 2005	EN10088: 1-2005	ROCT 5632-1972
Number	Number	Unified digital code	New Brand	Old Brand	ASTM A 959-09	JIS G 4303-2005 JIS G 4311-1991	ISO/TS 15510: 2003 ISO 4955: 2005	EN10088: 1-2005	ROCT 5632-1972
1	13	S30210	12Cr18Ni9	1Cr18Ni9	S30200,302	SUS302	X10CrNi18-8	X10CrNi18-8,1.4310	12X18H9
2	17	S30408	06Cr19Ni10	0Cr18Ni9	S30400,304	SUS304	X5CrNi18-10	X5CrNi18-10,1.4301	--
3	18	S30403	022Cr19Ni10	00Cr19Ni10	S30403,304L	SUS304L	X2CrNi19-11	X2CrNi19-11,1.4306	03X18H11
4	35	S31008	06Cr25Ni20	0Cr25Ni20	S31008,310S	SUS310S	X12CrNi23-12	X12CrNi23-12,1.4845	10X23H18
5	38	S31608	06Cr17Ni12Mo2	0Cr17Ni12Mo2	S31600,316	SUS316	X5CrNiMo17-12-2	X5CrNiMo17-12-2,1.4401	--
6	39	S31603	022Cr17Ni12Mo2	00Cr17Ni14Mo2	S31603,316L	SUS316L	X2CrNiMo17-12-2	X2CrNiMo17-12-2,1.4404	03X17H14M2
7	55	S32168	06Cr18Ni11Ti	0Cr18Ni10Ti	S32100,321	SUS321	X6CrNiTi18-10	X6CrNiTi18-10,1.4541	08X18H10T
8	62	S34778	06Cr18Ni11Nb	0Cr18Ni11Nb	S34700,347	SUS347	X6CrNiNb18-10	X6CrNiNb18-10,1.4550	08X18H12B
9	70	S22253	022Cr22Ni5Mo3N	00Cr22Ni5Mo3N	S31803	SUS329J3L	X2CrNiMoN22-5-3	X2CrNiMoN22-5-3,1.4462	--
10	71	S22053	022Cr23Ni5Mo3N	00Cr22Ni5Mo3N	S32205,2205	--	--	--	--
11	76	S25073	022Cr25Ni7Mo4N	00Cr25Ni7Mo4N	S32750,2507	--	X2CrNiMoN25-7-4	X2CrNiMoN25-7-4,1.4410	--
12	87	S11863	022Cr18Ti	00Cr17	S43035,439		X3CrTi17	X3CrTi17,1.4510	08X17T
13	92	S11972	019Cr19Mo2NbTi	00Cr18Mo2	S44400,444		X2CrMoTi18-2	X2CrMoTi18-2,1.4521	--
14	78	S11348	06Cr13Al	00Cr13Al	S40500,405	SUS405	X6CrAl13	X6CrAl13,1.4002	--
15	80	S11163	022Cr11Ti	00Cr12Ti	S40900		X2CrTi12	X2CrTi12,1.4512	--
16	82	S11213	022Cr12Ni	00Cr12Ni	S40977	--	X2CrNi12	X2CrNi12,1.4003	--
17	97	S41008	06Cr13	0Cr13	S41008,410S		X6Cr13	X6Cr13,1.4000	08X13