Delong Metal is group company in the steel manufacture & Trading, founded in the 2000s, 800+ staff, 25, 000+ m2 non-dust workshop, 40+ great large mills and cooperation partners in China, 4000, 000+ MT production per year under ISO management, 40, 000+customers in domestic and overseas market, 10 billion USD of annual turnover, 15+ subsidiary companies all over China, ranking the Top 100 private enterprises in China, 1 hour reach Shanghai/Tianjin /Guangzhou Port, we keep high quality, competitive price, thousands tons of stock, most efficient delivery and reliable cooperation for global valued customers. We have been engaging industry steel for over 20 years, best service and the most competitive price is one of our greatest advantages that make us today!
We operate within the scope of ISO 9001: 2015 accredited management system and the raw materials are procured from suppliers in compliance with ASTM, BS EN and DIN standards.Our products are rigorously inspected to ensure they are within tolerance of our customer′s specifications, we work with accredited laboratories for specialised material testing and chemical analysis.In addition, we use X-ray fluorescence technology to meet our high inspection standards and to ensure that our customers get the best quality products.
In recent years, our company has always occupied the market with high-quality products. The products are exported to Southeast Asia, Central Asia, North Africa, South America and other regions. We always give the buyer high-quality products, low prices, good service, one-time cooperation for lifelong friends. Welcome domestic and international friends to inquire for a better future together!
| MOQ | 10 tons |
| Thickness | 1mm-200mm |
| Width | 1000mm-3000mm |
| Length | 1000mm-12000mm |
| Standard | AISI, ASTM, BS, DIN, JIS, GB, etc |
| Grade | A572, A573, A633, A678, A709, A710, G3101, G3136, etc |
| Tpye | Steel plate |
| Surfacing | Coated, galvanized, black bared |
| Productive Technology | Hot Rolled & Cold Rolled |
| Port | TIANJIN |
| Payment Terms | L/C, T/T |
| Delivery | 15-25 days after deposit or according to customers' quantity |
| Packing | standard seaworthy export packing or as the request of customers |
| Standard | Out Diameter | Tolerance of Pipe End | Tolerance of Pipe Body |
| API 5L | 219.1-273.1 | +1.6mm, -0.4mm | ±0.75% |
| 274.0- 320 | +2.4mm, -0.8mm | ±0.75% | |
| 323.9- 457 | +2.4mm, -0.8mm | ±10.75% | |
| 508 | *2,4mm, -0.8mm | ±0.75% | |
| 559-610 | +2.4mm, -0.8mm | ±0.75% | |
|
GB/T 9711-1 ISO3183-1 |
219.1-273.1 | +1.59mm, -0.4mm | ±0.75% |
| 219.1-273.1 | 2.38mm, -0.79mm | ±0.75% | |
| 219.1-273.1 | 2.38mm, -0.79mm | ±1% | |
| 219.1-273.1 | 2.38mm, -0.79mm | ±1% | |
|
GB/T 9711-2 ISO 3183-2 |
219.1-273.1 | ±0.5% | ±0.75% |
| 323.9-355.6 | ±1.6mm | ±0.75% | |
| 406.4-610 | ±1.6mm | ±3.0mm |
| Out Diameter | Grade | Out Diameter | Wall Thickness | Tolerance |
| API 5L | / | 219.1-457 | 4-20 | +15%, -12.5% |
| B | 508-610 | 4-20 | +17.5%, -12.5% | |
| X42-X80 | 508-610 | 4-20 | +19.5%, -8% | |
|
GB/T 9711-1 ISO 3183-1 |
- | 219.1-457 | 4-20 | +15%, -12.5% |
| L245 | 508-610 | 4-20 | +17.5mm, -10% | |
| L290-L555 | 508-610 | 4-20 | +19.5%, -8% | |
|
GB/T 9711-2 ISO 3183-2 |
- | 219.1-610 | 4-20 | +1.0mm, -0.5mm |
| - | 219.1-610 | 10.1-20 | +10%, -5% |
