Black Painted Surface Mining / Drill Casing Pipe Alloy Steel Grade Gb/t9808-2008q
GB/T9808-2008Q / XJY118-2010 Mining & Drill Tubes With Alloy Steel Grade
GB/T9808-2008Q / XJY118-2010 Mining & Drill Tubes With Alloy Steel Grade
| O.D | 5-420mm |
| W.T | 0.5-50mm |
| L | Max 12000mm |
| Application | For wire-line drill rods,core barel tubes ,drill rods coupling casing |
Steel Grade and Chemical Compositions
| Steel | Tensile Strength | Yield Point | Elongation | Heat Treatment |
| Grade | Mpa | Mpa | % | |
| Min | ||||
| ZT380 | 640 | 380 | 14 | Normlized |
| ZT490 | 690 | 490 | 12 | Normlized |
| ZT540 | 740 | 540 | 12 | Normlized |
| ZT590 | 770 | 590 | 12 | Normlized |
| ZT640 | 790 | 640 | 12 | QT |
| ZT740 | 840 | 740 | 10 | QT |
| XJY850 | 950 | 850 | 15 | QT |
Tolerance On Size
| Standard | Type | Size | Tolerance | |||
| GB/T9808-2008 | Hot Rolled | O.D | +10%D -0.5%D | +0.65 -0.35 | SELECT BIGGER | |
| W.T | ≤10 | +155S -105S | +0.45 -0.35 | SELECT BIGGER | ||
| >10 | +12.5%S -10%S | |||||
| Cold Drawn | O.D | ±0.50%D ±0.20 | SELECT BIGGER | |||
| W.T | ±8%S ±0.15 | |||||
| Q(N)/XJY118-2010 | Cold Drawn | O.D | ±0.40%D ±0.20 | |||
| W.T | ±7%S ±0.15 | |||||
How to get the sample?
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.
What is your Payment Term?
1.T/T: 30% deposit in advance, the balance 70% paid before shipment
2.30% down payment, the balance 70% paid against L/C at sight
3.Upon negotiation
Who are your customers?
1.Stockists, Distributors,Wholesalors,Agents, Traders, End Users, etc
How long will you react on our requirement?
1.Your requirement would be treated within 24 hours on weekdays. Quotations would be sent upon technical details confirmed by customer!
Any more questions about your doubts, please feel free to send us your emails or call!
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.