2012最新中外www.www.duhp.cn/' target='_blank' style='color:#0000FF; text-decoration:underline;'>厚壁無縫鋼管標(biāo)準(zhǔn)對照表
Φ168-180*5-6-8-10-12-14-16Φ194-203*7-8-9-10-12-14-16Φ219-295*6-7-8-10-12-14Φ273-299*32-35-40-50-60-80Φ325-351*9-10-12-14-16-18Φ355-377*10-32-35-40-45-60-70Φ402-426*10-12-14-16-18-20-45Φ450-480*10-12-14-16-18-30-40-50Φ510-530*12-14-16-18-30-40-50