20G管材/高壓金屬無縫鍋爐管

20G管材/高壓金屬（shǔ）無縫鍋爐（lú）管

20G管材 22-28X2.5-4-6
20G管材 32-38-40X3-4-6-8
20G管材 42-48X3.5-4-5-8-10
20G管材 51-60X3.5-5-6-7-9
20G管材 76-89X4.5-6-8-10-12
20G管材 108-133X5-6-8-10-12
20G管材 159-168X7-8-10-14-18-26
20G管材 194-219X6-8-12-20-26-38
20G管材（cái） 245-273X10-12-14-16-22-15-40
20G管材 325-355.6X11-14-16-20-30-40
20G管材 377-426X11-14-16-20-25-40-45
20G管材（cái） 426-508X14.2-17.5-22-45-52
20G管（guǎn）材 530-558.8X16.8-60-70