304/316 Welded Stainless capillary tube

TORICH GB/T12771 12Cr18Ni9 06Cr18Ni11Ti 304/316 Welded Stainless capillary tube

Product Name:GB/T12771 12Cr18Ni9 06Cr18Ni11Ti Welded Stainless Steel Pipes For Liquid Delivery

Standard: GB/T1277

Size Range: OD:5-500mm WT:0.5-50mm Length:3-9 M

Application: For Liquid Delivery

Steel Grade: 304/316/321/347/444

Technology: arc welding

Characteristic: 

Good concentricity

Good surface quality

Good OD and ID tolerance

High Precision

Stable quality

Smooth Roughness

TORICH QUALITY ASSURANCE

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%

Tolerance of WT

Norminal WT	Permissible
≤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

Bending degree

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

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
3	022Cr19Ni10	7.90	W=0.02482S(D-S)
4	06Cr18Ni11Ti	8.03	W=0.02507S(D-S)
5	06Cr25Ni20	7.98	W=0.02507S(D-S)
6	06Cr17Ni12Mo2	8.00	W=0.02513S(D-S)
7	022Cr17Ni12Mo2
8	06Cr18Ni11Nb	8.03	W=0.02523S(D-S)
9	022Cr18Ti	7.70	W=0.02419S(D-S)
10	022Cr18Ti	7.75	W=0.02435S(D-S)
11	06Cr13Al
12	022Cr19Mo2NbTi
13	022Cr12Ni
14	06Cr13

Our factory

Our Packaging

QUALITY CONTROL

Q: Are you trading company or manufacturer ?

A: A professional steel pipes materials inventor, manufacturer and solution provider

Q: How long is your delivery time?

A: Generally it is 7-14 days if the goods are in stock. or it is 30-60 days if the goods are not in stock, and it is according to quantity.

Q: Do you provide samples ? is it free or extra ?

A: Yes, we could offer the sample for free charge but you need to pay the cost of freight.

Q: What is your terms of payment ?

A: Payment<=1000USD, 100% in advance. Payment>=1000USD, 30% T/T in advance , balance before shippment.
If you have another question, pls feel free to contact us 

TORICH GB/T12771 12Cr18Ni9 06Cr18Ni11Ti 304/316 Welded Stainless capillary tube