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尺寸     标准	外径（mm）		壁厚（%）			切割长度（mm）
	尺寸	公差	尺寸(mm)	公差		尺寸	公差
GB/T14975-02	10~30	+0.30/-0.30	S≤3	+14/-14	1.0~3.0	+15/0
	30~50	+0.40/-0.40	S＞3	+12/-10
	D＞50	+0.9%/-0.9%
GB/T14976-02	6~10	+0.20/-0.20	0.5~1.0	+0.15/-0.15mm		+15/0
	10~30	+0.30/-0.30	1.0~3.0	+14/-14
	30~50	+0.40/-0.40	＞3	+12/-10
	D＞50	+0.9%/-0.9%		+12.5/-12.5
GB13296-91	≤140	+1.25%/-1.25%	≤10	+15/-15
	＞140	+1%/-1%	＞10
ASTM213	D＜25.4	+0.10/-0.10	D＜38.1	+20/0	D＜50.8	+3.0/0
	25.4~38.1	+0.15/-0.15
	38.1~50.8	+0.20/-0.20
	50.8~63.5	+0.25/-0.25	D≥38.1	+22/0	D≥50.8	+5.0/0
	63.5~76.2	+0.30/-0.30
	76.2~101.6	+0.38/-0.38
	101.6~190.5	+0.38/-0.64
	190.5~228.6	+0.38/-1.14
ASTM A269	D＜12.7	+0.13/-0.13		+15/-15		+3.2/0
	12.7~38.1			+10/-10
	38.1~88.9	+0.25/-0.25				+4.8/0
	88.9~139.7	+0.38/-0.38
	139.7~203.2	+0.76/-0.76
ASTM A312	10.29~48.26	+0.40/-0.80		+12.5/-12.5		+6.0/0
	48.26~114.30	+0.80/-0.80
	114.30~219.08	+1.60 /-0.80
	219.08~457.20	+2.40/-0.80
ASTM A789	D≤12.7	+0.13/-0.13		+15/-15		+3.0/0
	12.7~38.1			+10/-10
	38.1~88.9	+0.25/-0.25				+5.0/0
	88.9~139.7	+0.38/-0.38
	139.7~203.2	+0.76/-0.76
ASTM A790	10.29~48.26	+0.40/-0.80
	48.26~114.3	+0.80/-0.80
	114.3~219.08	+1.60/-0.80
	219.08~457.20	+2.40/-0.80
EN17455-02	10~30	+0.30/-0.30	S≤3	+14/-14	1.0~3.0	+15.0/0
	30~50	+4.00/-4.00	S＞3	+12/-10
	D＞50	+9%/-9%
EN17456-02	6~10	+0.20/-0.20	0.5~1.0	+0.15/-0.15		+15.0/0
	10~30	+0.30/-0.30	1.0~3	+14/-14
	30~50	+4.00/-4.00	S＞3	+12/-10
	D＞50	+0.9%/-0.9%
EN10216-5