20#無縫鋼管的制造工藝
1.熱軋(擠壓無縫鋼管):圓管坯→加熱→穿孔→三輥斜軋、連軋或擠壓→脫管→定徑(或減徑)→冷卻→矯直→水壓試驗(yàn)(或探傷)→標(biāo)記→入庫
2.冷拔(軋)無縫鋼管:圓管坯→加熱→穿孔→打頭→退火→酸洗→涂油(鍍銅)→多道次冷拔(冷軋)→坯管→熱處理→矯直→水壓試驗(yàn)(探傷)→標(biāo)記→入庫
20#無縫鋼管42×3.5-4-5-6-7-8-9-10
20#無縫鋼管45×3.5-4-5-6-7-8-9
20#無縫鋼管48×3.5-4-5-6-7-8-9-10
20#無縫鋼管51×3.5-4-5-6-7-8-9-10
20#無縫鋼管56×3.5-4-5-6-7-8-9-10
20#無縫鋼管57×3.5-5-6-7-8-9-10-12
20#無縫鋼管60×3.5-4.5-5-6-7-8-9-12-14
20#無縫鋼管63×3.5-4.5-5-6-7-8-9-10-12-14
20#無縫鋼管68×4-4.5-5-6-7-8-9-10-12-14-16
20#無縫鋼管70×4-4.5-5-6-7-8-9-10-12-15-16
20#無縫鋼管73×4-4.5-5-6-7-8-9-10-12-15
20#無縫鋼管銷售公司網(wǎng)址:4smkt.cn
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