Durable Low Carbon Seamless Steel Tube DIN 1629 St37.0 St52.0 3 - 12m Length
Product Details
seamless steel pipe
,precision stainless steel tubing
Low Carbon Steel Pipe DIN 1629 St37.0 t52.0 Unalloyed Seamless Steel Tube
Standard: DIN 1629 Seamless circular unalloyed steel tubes subject to special requirements
Applications: used in construction of chemical plant,vessels,pipework and for general mechanical engineering purposes.
Production Method: Seamless Cold Drawn/Rolling or Hot Rolling
Size range: O.D.:20-660mm W.T.:1-60mm L:max12000mm
Steel Grade and Chemical Compositions:
| Steel grade | Type of deoxidization (R, killed (including semi-killed) (RR, fully killed) | Chemical composition, % by mass | Addition of nitrogen fixing elements (e.g. not less than 0.020% A) | ||||
| Symbol | Material number | C | P | S | N | ||
| MAX | |||||||
| St 37 | 1.0254 | R | 0.17 | 0.040 | 0.040 | 0.009 | - |
| St 44 | 1.0258 | R | 0.21 | 0.040 | 0.040 | 0.009 | - |
| St 52 | 1.0421 | R | 0.22 | 0.040 | 0.035 | - | Yes |
| 1) A content in excess of the maximum value stated is permitted if a phosphorus conten less than the maximum specified by 0.005% P per 0.001% N is observed. However, the nitrogen content shall not exceed a value of 0.012% in the cast analysis and 0.014% in the product analysis. 2) The specified maximum values do not apply if the steels are supplied with the RR(instead of R) type of deoxidization. 3) The content shall not exceed 0.55% Si and 1.60% Mn in the cast analysis or 0.60% Si and 1.70% Mn in the product analysis. | |||||||
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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
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