不锈耐酸钢极薄壁无缝钢管（GB/T3089--1982)发表评论(0)编辑词条

格见表6-33。表6-33不锈耐酸钢极薄壁无缝钢管的尺寸规格 外径×壁厚/mm10.3×0.1512.4×0.2015.4×0.2018.4×0.2024.0×0.2024.4×0.2026.4×0.2032.4×0.2035.0×0.5040.4×0.2040.6×0.3041.0×0.5041.2×0.6048.0×0.2550.5×0.2553.2×0.6055.0×0.5059.6×0.3060.0×0.2560.0×0.5061.0×0.3561.0×0.5061.2×0.6067.6×0.3067.8×0.4070.2×0.6074.0×0.5075.5×0.2575.6×0.3082.8×0.4083.0×0.5089.6×0.3089.8×0.4090.2×0.4090.5×0.2590.7×0.3090.8×0.4095.6×0.30101.0×0.50102.6×0.30 110.9×0.45125.7×0.35150.×80.40250.8×0.40注：1.根据需方要求，经双方协议，可供应表中规定以外的其他尺寸规格钢管。      2.钢管通常长度为O.5-6m。(2)允许偏差见表6-34、表6-35。表6-34不锈耐酸钢极薄壁无缝钢管的内径允许偏差直径／mm普通级／mm高级／mm10～250+O.05
-O.10
±O.05表6-35不锈耐酸钢极薄壁无缝钢管的壁厚允许偏差钢管尺寸／mm壁厚允许偏差／mm外径壁厚
普通级
高  级≤60≤O.20
±O.03+O.03
-O.Ol
O.25
+0.04
-O.03
+O.03
-0.02
O.30
±O.04±0.030.35
+O.05
-O.04
+0.04
-O.03
≤60
0.40
±O.05±O.04O.50
±0.06+O.05
-O.04
O.60
±0.08±0.05>60
≤O.25
±O.04±0.03O.30
±O.04+0.04
-O.03
O.35
±O.05±0.040.40
±O.05+O.05
-O.04
0.50
±0.06士O.05O.60
±O.08±O.05注：钢管的每米弯曲度应不大于5mm。(3)牌号和化学成分见表6—36。表6-36不锈耐酸钢极薄壁无缝钢管的牌号和化学成分牌  号化学成分(质量分数)(％)C
Si
Mn
S
P
Cr
Ni
Ti
Mo
00Crl8NilO
≤O.03
≤1.00
≤2.00
≤O.030
≤O.035
17～198～12 
1Crl8Ni9Ti≤O.12
≤1.00
≤2.00
≤O.030
≤0.035
17～198～115(C％～0.02)～O.8 00Crl7Ni14M02≤O.03
≤1.00
≤2.00
≤0.030
≤0.035
16～1812～16 l.8～2.51Crl8Nil2Mo2Ti
≤0.12
≤1.00
≤2.oo
≤0.030
≤O.035
16～1911～145(C％～0.02)～0.8l.8～2.51Crl8Nil2M03Ti
≤O.12
≤1.00
≤2.00
≤O.030
≤0.035
16～1911～145(C％～  O.02)～0.82.5～3.5注：根据需方要求，经双方协议，可生产上表规定牌号以外的钢管。(4)力学和化学性能见表6_37。表6-37不锈耐酸钢极薄壁无缝钢管的力学和化学性能牌  号力学性能≥化学性能b/MPa5(％)00Crl8Nil0
440
40
钢管应按T法进行晶间腐蚀倾向试验。试验结果不得有晶间腐蚀倾向1Crl8Ni9Ti550
40
00Crl7Nil4Mo
480
40
1Crl8Nil2M02Ti
540
35
1Crl8Nil2M03Ti
540
35