Cold Drawn Seamless Steel Tube for Gas Cylinder

Product Description

TORICH GB/T18248 Cold Drawn 37Mn 34Mn2V 30CrMo 35CrMo Seamless Steel Tubes for Gas Cylinder

Product Name	Cold Drawn 37Mn 34Mn2V 30CrMo 35CrMo Seamless Steel Tubes for Gas Cylinder
Brand	TORICH
Standard	GB/T18248
Grade	37Mn 34Mn2V 30CrMo 35CrMo
Size	OD: 60-273    WT:3.5-9    L:4-12m
Technic	Cold Drawn/Hot Rolled
Condition	Normalizing, Annealed/Hot Rolled
Used	Gas Cylinder

Permissible Variation of OD and WT

Type	OD	WT
Hot Rolled	±1.0	+15 -10
Cold Drawn	±0.75	+12.5 -10

Chemical Requirement

Grade	C	Si	Mn	P & S	Cr	Mo	V	Ni	Cu
37Mn	0.34-0.40	0.10-0.30	1.35-1.65	≤0.030	≤0.30	-	-	≤0.30	≤0.20
34Mn2V	0.30-0.37	0.17-0.37	1.40-1.75	≤0.030	≤0.30	-	0.07-0.12	≤0.30	≤0.20
30CrMo	0.26-0.34	0.17-0.37	0.40-0.70	≤0.030	0.80-1.10	0.15-0.25	-	≤0.30	≤0.20
35CrMo	0.32-0.40	0.17-0.37	0.40-0.70	≤0.030	0.80-1.10	0.15-0.25	-	≤0.30	≤0.20

Test:

Chemical Test: GB/T222,GB/T223,GB/T4336

Tension Test: GB/T228

Impact Test: GB/T229

Hydraulic Test: GB/T241

Eddy Current Test: GB/T7735

Magnetic Flux Leakage Testing: GB/T12606

Ultrasonic Test: GB/T5777

Macroscopic Examination: GB/T226, GB/T1979

Non-metallic Inclusion: GB/T10561

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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Our Company

TorichInternational Co.,Ltd is a professional manufacturer and exporter of steel pipes materials. It is an international marketing and sales company specialized in steel tubes.

Our main products:Seamless Steel Tubes with Carbon and Alloy Steel Grade, Welded Precision Steel Tubes,DOM Steel Tubes, Seamless & Welded Stainless Steel Tubes with Nickel and Alloy Steel Tube.

Our factory was established since 1997, with the name of Haiyan SanxinSteel Pipe Co., Ltd. The factories` technicians are of great engineering experience in steel pipe industry for more than 20 years, who are in great command of production technology for Cold Drawing and Cold Rolling, as well as heat treatment and inspection. So we have strong technician team and manufacturing capability.

Packing & Delivery

Seamless Seel Tubes are packed in wooden boxes or hexagonal bundles in seaworthy packing.

       1. hexagonal bundles                                                 2. wooden boxes

Our Certifications

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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