Standard | EN10305-6 Welded Cold Drawn Tubes |
Key Word | Precision Steel Tubes |
Material | E155, E195, E235, E275, E355 |
Size | OD: 20-350mm; WT: 1-35mm; Length: max12000mm |
Production method | Cold Drawn |
Deliver condition | 1). +C No heat treatment after the final cold drawig process 2). +LC After the final heat treatment there is a suitable drawing pass 3). +SR After the final cold drawing process there is a stress relieve heat treatment in a controlled atmosphere 4). +A After the final cold drawing process the tubes are annealed in a controlled atmosphere 5). +N After the final cold drawing operation the tubes are normalized in a controlled atmosphere |
Chemical Components
Chemical composition (cast analysis) | |||||||
steel grade | % by max. | ||||||
steel name | steel number | C max. | Si max. | Mn max. | p max. | S max. | Al total a min. |
E155 | 1.0033 | 0.11 | 0.35 | 0.70 | 0.025 | 0.015 | 0.015 |
E195 | 1.0034 | 0.15 | 0.35 | 0.70 | 0.025 | 0.015 | 0.015 |
E235 | 1.0308 | 0.17 | 0.35 | 1.20 | 0.025 | 0.015 | 0.015 |
E275 | 1.0225 | 0.21 | 0.35 | 1.40 | 0.025 | 0.015 | 0.015 |
E355 | 1.0580 | 0.22 | 0.55 | 1.60 | 0.025 | 0.015 | 0.020 |
Elements not quoted in this table (but see footnote a) shall not be intentionally added to the steel without the agreement of the purchaser, except for elements which may be added for the purposes of deoxidation and/or nitrogen binding. All appropriate measures shall be taken to prevent the addition of undesirable elements from scrap or other materials used in the steel making process. | |||||||
a This requirement is not applicable provided the steel contains a sufficient amount of other nitrogen binding elements, such as Ti, Nb or V. If added, the content of these elements shall be reported in the inspection document.When using titanium, the manufacturer shall verify that (Al + Ti/2) 2 0,020. |
Company Introduction
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.
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