dl752
dl752火力发电厂异种钢焊接技术规程
06 412～ 559 21 69 Ⅲ 2 15CrMo GB5310 — — — ≤ ≤ 235 441～ 638 21 59 Ⅲ 3 12CrMoV GB/T077 — — — ≤ ≤ 225 440 22 78 Ⅲ 4 12Cr1MoV GB5310 — — — ≤ ≤ 255 471～ 638 21 59 Ⅲ 5 10CrMo910 DIN17175 — — — ≤ ≤ 269～ 280