High Pressure Seamless Steel Tubes for Diesel Engine

Product Description

TORICH GB/T3093 High Pressure Seamless Steel Tubes for Diesel Engine

Standard	GB/T3093
Material	10A(U20103), 20A(U20203), Q345A(L03451)
Size	OD: 4-60mm WT: 0.5-8 Length: 1.5-6m
Delivery Condition	Heat Treatment
Test	Tensile Test, Hydraulic Test, Eddy Current Test, Cold Heading Test
Application	Diesel Engine

 

Chemical Requirements

Grade	C	Si	Mn	P	S	Cr	Ni	Cu
				max
10A	0.07-0.13	0.17-0.37	0.35-0.65	0.030	0.030	0.15	0.30	0.20
20A	0.17-0.23	0.17-0.37	0.35-0.65	0.030	0.030	0.25	0.30	0.20
Q345A	≤0.20	≤0.55	1.00-1.60	0.030	0.030	0.30	0.30	0.20

 

Permissible Variations

Accuracy Class	OD	Permissible Varations	ID	Permissible Varations
A	All	±0.10	≤3.0	+0.10 -0.20
			>3.0	+0.10 -0.30
B	All	±0.10	<2.0 ≥2.0	±0.05 ±0.10
C			≤3.0 >3.0	±0.025 ±0.050
D	6.0	+0.05 0
	7.0

 

Mechanical Requirements

Grade	Tensile Strength/MPa	Yeild Strength/MPa	Elongation %
		min
10A	335-470	205	30
20A	390-540	245	25
Q345A	470-630	345	22

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.

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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