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219*25的20G鍋爐管GB/T 5310執(zhí)行標(biāo)準(zhǔn)超高壓鍋爐無(wú)縫鋼管
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57×3.5-5-6-7-8-9-10-12
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219×6-8-12-16-18-20-25
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620×14-20-30-35-45-50-60
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60×3.5-4.5-5-6-7-8-9-12-14
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219×30-40-45-50-55
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630×10-20-30-40-55
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63×3.5-4.5-5-6-7-8-9-10-12-14
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219×55-58-60-65-70
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640×12-25-32-40-50-65
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68×4-4.5-5-6-7-8-9-10-12-14-16
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245×8-10-14-17-20-22
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650×15-20-30-40-50-60-65
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70×4-4.5-5-6-7-8-9-10-12-15-16
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245×25-28-30-34-40
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680×20-25-35-45-65
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73×4-4.5-5-6-7-8-9-10-12-15
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273×7-9-12-15-18-20-25
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710×10-20-30-45-50-65
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