GB/T 3093 DIN 2391, GB/T 3093-2002,EN10305-1, EN10305-4 10A 20A Q345A OD 3mm - 60mm Cold Drawn Seamless Tube
Product Details
precision stainless steel tubing
,seamless carbon steel tube
Product Name:
GB/T 3093 10A 20A Q345A High-pressure Diesel Engine Seamless Steel Tubes
Outer Diameter: 3-60 mm
Wall Thickness: 0.5-8mm
Standards: GB/T3093,DIN2391, EN10305-1, EN10305-4 etc.
Steel Grade: 10A,20A,Q345A,St37.4, St35(E235), St45(E255), St52(E355),etc.
MECHANICAL PROPERTIES AT ROOM TEMPERATURE
| STEEL GRADE | TENSILE STRENGTH (MPA) | YIELD STRENGTH(MPA) | ELOGATION(%) |
| 10A | 335-470 | ≥205 | ≥30 |
| 20A | 390-540 | ≥245 | ≥25 |
| Q345A | 470-630 | ≥345 | ≥22 |
Production process:
Cold drawing bright heat treatment without oxidization 100%nondestructive testing inside flushing under the high pressure antirust oiling outer and inner surface.
Main Application:
to be used in hydraulic system, automobile parts and in the occasion where the high precision, brightness, cleanness and mechanical properties of the tube are required.
Main Features:
high accuracy, excellent brightness, no oxidization on the outer and inner walls after heat treatment, high cleanness inside wall. The steel tube is able to stand high pressure. No deformation after cold bending, no crack after flaring and flattening . The complicated geometrical forming and machining can be realized.
| STEEL GREDE | CHEMICAL COMPOSITIONS(%) | |||||||
| C | Si | Mn | P | S | Cr | Ni | Cu | |
| ≤ | ||||||||
| 10A | 0.07-0.13 | 0.17-0.37 | 0.35-0.65 | 0.03 | 0.03 | 0.15 | 0.30 | 0.20 |
| 20A | 0.17-0.23 | 0.17-0.37 | 0.35-0.65 | 0.03 | 0.03 | 0.25 | 0.30 | 0.20 |
| Q345A | ≤0.20 | ≤0.55 | 1.00-1.60 | 0.03 | 0.03 | 0.30 | 0.30 | 0.20 |
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.
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, 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
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