Welded Stainless Steel Tubes for Machine Structures

Product Description

TORICH GB/T12770 Welded Stainless Steel Tubes for Machine Structures

Standard	GB/T12770
Material	0Cr18Ni9, 00Cr19Ni10, 0Cr17Ni12Mo2, 00Cr17Ni4Mo2 etc
Size	OD: 8-630mm WT: 0.3-16mm Length: 4-8m
Delivery Condition	W, T, WC, SP
Test	Bend Test, Flaring Test, Flange Test, Intergranular Corrosion Test, Nondestructive Test
Application	Mechanical Parts and Mechine Structure

 

Chemical Requirements

Grade	C	Si	Mn	P	S	Ni	Cr	Mo	Other
1Cr18Ni9	≤0.15	≤1.00	≤2.00	≤0.035	≤0.030	8.00-10.00	17.00-19.00
0Cr18Ni9	≤0.07	≤1.00	≤2.00	≤0.035	≤0.030	8.00-11.00	17.00-19.00
00Cr19Ni10		≤1.00	≤2.00	≤0.035	≤0.030	8.00-12.00	18.00-20.00
0Cr25Ni20		≤1.00	≤2.00	≤0.035	≤0.030	19.00-22.00	24.00-26.00
0Cr17Ni12Mo2		≤1.00	≤2.00	≤0.035	≤0.030	10.00-14.00	16.00-18.00	2.00-3.00
00Cr17Ni14Mo2		≤1.00	≤2.00	≤0.035	≤0.030	12.00-15.00	16.00-18.00	2.00-3.00
0Cr18Ni10Ti		≤1.00	≤2.00	≤0.035	≤0.030	9.00-12.00	17.00-19.00		Ti≥5XC%

 

Mechanical Requirements

Grade	RP 0.2/MPa	Tensile Strength/MPa	Elongation %
			Heat Treatment	Non Heat Treatment
	min
1Cr18Ni9	210	520	35	25
0Cr18Ni9	210	520
00Cr19Ni10	180	180
0Cr25Ni20	210	520
0Cr17Ni12Mo2	210	520
00Cr17Ni14Mo2	180	480
0Cr18Ni10Ti	210	520

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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FAQ

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, it is according to quantity.

Q: Do you provide samples of carbon seamless steel tube ? is it free or extra ?
A: Yes, we could offer the sample for free charge but need 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

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