Precision Square Steel Tube 150x150 DIN 2395 Electric Welded ST37.2 Steel Pipe
1.Brief introduction of DIN 2395 precision square steel tube:
Similar standards: EN 10305-5
Material/grade: RST 37-2(E235), ST37-3(E195), St 44-2, St 44-3,USt37-2
Size dimension:
Width: 10, 15, 20, 25, 30, 35, 40,50,60,70,80,etc mm;
Height: 15, 20, 25, 30, 35, 40, 50, 60,70,80,100,120,150mm;
WT: 1.5 - 3 mm.
Length: 4M- 12M or according to customer' require.
Height and width's tolerance:
Height up to 20 mm:± 0.20 mm,
Height up to 25, 30, 35 mm:± 0.25 mm,
Height of up to 40, 50 mm:± 0.30 mm,
Height up to 60 mm:± 0.40 mm.
2. Delivery conditions of precision square tubing:
| Delivery Conditions | Symbol | Description | Quality Level |
| Welding and polishing | M | usually not heat treated, but suitable for final annealing, heat treatment after welding and oxide skin not provided | A or B |
| BKM | similar to M and polished | / |
| Normalizing | NBK | After the cold bending process, annealing in a available environment | |
3.Mechanical property:
| Grade | NBK (normalized) | BKM (welded and sized) |
| | Tensile strength Rm N/mm² | Yield strength ReH N/mm² min | Elongation at repture A5% min | Tensile strength Rm N/mm² | Yield strength ReH N/mm² min | Elongation at repture A5% min |
| USt 37.2 | 360-470 | 235 | 23 | 390 | 250 | 7 |
| RSt 37.2 |
| St 37.3 |
| St 44.2 | 430-540 | 275 | 21 | 460 | 290 | 6 |
| St 44.3 |
| M22 | 420 min | 290 | 25 | - | - | - |
| QSte340 N | 460-580 | 340 | 27 | - | - | - |
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
4.Precision Square Steel Tube product show:
5.Packing method:
Q&A
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.
Q: Do you have agent or distributor in our country?
A: We are recruiting area agent and distributor all over the world, welcome to send us your mail or call us for detail discussion.
Q: How is your production capability?
A: 1. 2000 tons monthly production capacity, 5000 tons monthly trading capability
2. Prompt and Timely shipment
Q: How to get the sample?
A: 1. You are requested to pay for sample charges and courier charges from China to your country; and the free sample is according the product like size, steel grade and quantity, please consult our sales for details
2. Sample charges will be refunded when order is placed.
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