Supply Changzhi seamless square and rectangular tube (factory, price, quality) Q345B square and rectangular tube manufacturing plants / best quality Rectangular Pipe / Rectangular Pipe optimal price / Precision seamless steel square and rectangular tube manufacturers specifications: 15mm-820mm, wall Thickness :0.8-60mm, Length: 4M-12M. seamless implementation of standards: GB/T8162-2008, GB/T8163-2008.GB/T3087-1999.ASTM A106, ASTM A53.ASTM A355, API SPEC 5L, API SPEC 5CT, DIN 17175, DIN 7100, our company can according to customer's specific needs or technical protocol for custom processing. Q345B square and rectangular tube factory / best quality square steel pipe / square and rectangular tube optimal price / Precision seamless steel square and rectangular tube manufacturers are widely used in petroleum, natural gas transportation, construction, machinery manufacturing, mining, chemical industry, electric power, aviation, shipbuilding. Hebei Cangzhou Yan Thai Steel Pipe Co., Ltd. to provide you with a variety of square and rectangular steel pipe products according to your specific needs drawing processing. Specifications range: square tube (Squar Steel tube) 500 * 500 * 5-30mm 480 * 480 * 5-30mm 450 * 450 * 5-30mm 406 * 406 * 5-25mm 380 * 380 * 6-30mm 400 * 400 * 5-25mm 356 * 356 * 5-25mm 300 * 300 * 5-25mm 350 * 350 * 5-25mm 280 * 280 * 5-25mm 220 * 220 * 5-20mm 200 * 200 * 5-20mm 250 * 250 * 5-25mm 180 * 180 * 5-18mm 160 * 160 * 4-30mm 150 * 150 * 5-20mm 140 * 140 * 4-30mm 135 * 135 * 4-30mm 100 * 100 * 6mm 40 * 40 * 0.8-5mm 50 * 50 * 0.58-5mm rectangular tubes (Rectagular Steel tube) 450 * 550 * 5-30mm 450 * 250 * 5-30mm 300 * 400 * 5-30mm 430 * 350 * 5-25mm 450 * 250 * 5-30mm 500 * 306 * 5-25mm 400 * 600 * 5-30mm 500 * 300 * 5-25mm 350 * 650 * 5-30mm 400 * 200 * 5-25mm 450 * 250 * 5-25mm 500 * 200 * 5-25mm 300 * 200 * 5-25mm 400 * 250 * 5-25mm 400 * 265 * 5-25mm 300 * 150 * 5-20mm 350 * 250 * 5-25mm 350 * 300 * 5-25mm 250 * 150 * 5-20mm 300 * 200 * 5-25mm 350 * 150 * 5-20mm 250 * 100 * 13mm 300 * 180 * 5-20mm 300 * 200 * 5-25mm 100 * 400 * 5-30mm 20 * 50 * 0.8-3mm 80 * 60 * 0.8- 5mm Our products have been sold to the following cities: Zhejiang, Shanghai, Tianjin, Liaoning, Yunnan, Guangxi, Guangdong, Anhui, Beijing, Xinjiang, Chongqing, Hunan, Hubei, Hebei, Henan, Ningxia, Qinghai, Gansu, Shaanxi, Tibet Guizhou, Sichuan, Hainan, Heilongjiang, Inner Mongolia, Shandong, Fujian, Jilin, Shanxi, Jiangxi, Jiangsu, Shanghai, Nanjing, Beijing and Shijiazhuang. Business philosophy: the same product than the quality of the same quality than price, the same price than service, the same service than credibility. "Another company can according to your specific needs for processing a variety of customized seamless square and rectangular steel pipe, product quality assurance, welcome customers to negotiate!