SR4 requirement 什么意思？

墨墨 · 发表于 2015-3-2 11:32

All piples with thickness greater than 12mm shall have SR4 requirements.

请问SR4 requirements是什么？

另外，S355和S355L有什么区别？

还请路过的坛友不吝赐教，先谢过了~

补充内容 (2015-3-2 11:33):
piples = pipes

aqwe · 发表于 2015-3-2 14:17

API 5L SR4

清__风 · 发表于 2015-3-3 19:46

IACS UR S4 吧，Criteria for the Use of High Tensile Steel with
Minimum Yield Stress of 315 N/mm2, 355 N/mm2
and 390 N/mm2
This UR does not apply to CSR Bulk Carriers and Oil Tankers.

墨墨 · 发表于 2015-3-6 10:49

aqwe 发表于 2015-3-2 14:17
API 5L SR4

感谢回复~

墨墨 · 发表于 2015-3-6 10:49

清__风发表于 2015-3-3 19:46
IACS UR S4 吧，Criteria for the Use of High Tensile Steel with
Minimum Yield Stress of 315 N/mm2, 3 ...

感谢回复~