68*12的20#无缝钢管生产厂家/20#厚壁钢管现货表
48×3.5-4-5-6-7-8-9-10 51×3.5-4-5-6-7-8-9-10 54×3.5-4-5-6-7-8-9-10 57×3.5-5-6-7-8-9-10-12 60×3.5-4.5-5-6-7-8-9-12-14 63.5×3.5-4.5-5-6-7-8-9-10-12-14 68×4-4.5-5-6-7-8-9-10-12-14-16 70×4-4.5-5-6-7-8-9-10-12-15-16 73×4-4.5-5-6-7-8-9-10-12-15 76×4-4.5-5-6-7-8-9-10-12-14 www.whggzzc.com
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