Material Q235B ￠ 219 × 6.0-7.0 ￠ 273 × 6.0-8.0 ￠ 325 × 6.0-9.30 ￠ 377 × 6.0-12 ￠ 426 × 6.0-12 ￠ 478 × 6.0-12 ￠ 529 × 6.0-12 ￠ 630 × 6.0-12 ￠ 720 × 6.0-12 ￠ 820 × 6.0-12 ￠ 920 × 8.0-12 ￠ 1020 × 8.0-12 ￠ 1220 × 8.0-12 ￠ 1420 × 8.0-14 ￠ 1620 × 10-18 ￠ 1820-2 companies operating in honesty, customer first "principle, the best quality and the lowest price, the best service, to acknowledge the new and old customers. We sincerely hope to establish long-term Hebei the ten billion Steel Pipe Manufacturing Co., Ltd. welcome you. The company supplies spiral steel pipe products from hot rolled steel strip as raw material, often warm spiral shape, welded by automatic submerged arc welding process, product execution the API spec 5L.EN10217 GB/T9711.1 SY/T5037-2000 standard. Mainly for the oil and gas industry to transport flammable fluid and non-flammable fluid and steel structure. The company has two modern production lines, an annual output of diameter 219-2420mm, 200,000 tons of steel pipe wall thickness of 5-25.4mm. Products sold throughout 28 provinces, autonomous regions, and some exports. Double submerged arc welded steel pipe material Q235B ￠ 219 × 6.0-7.0 ￠ 273 × 6.0-8.0 ￠ 325 × 6.0-9.30 ￠ 377 × 6.0-12 ￠ 426 × 6.0-12 ￠ 478 × 6.0-12 ￠ 529 × 6.0-12 ￠ 630 × 6.0-12 ￠ 720 × 6.0-12 ￠ 820 × 6.0-12 ￠ 920 × 8.0-12 ￠ 1020 × 8.0-12 ￠ 1220 × 8.0-12 ￠ 1420 × 8.0-14 ￠ 1620 × 10-18 ￠ 1820 -2420 × 10-20. Companies operating in the principle of "honesty, customer first" to acknowledge the new and old customers with the best quality and the lowest price, the best service. We sincerely hope to establish long-term cooperative relationship with you, mutual benefit and common development! Relations of cooperation, mutual benefit and common development! 420 × 10-20