ֺӸֹƣֺܣɲ־ִģ߾ͺƳɵĸֹܡ
ԭԴ̫֣֣żҸ£ڣɽά˵ȡ
Ӧ 1. GB127702002 еṹòֺӸֹ 2. DIN-174551999-02:ͨԲβֺ 3. EN10217-7(2005汾:ѹúӸֹ-7ֹ֣ܣ 4. GB12771-2000/2008ֺӸֹ 5. HG20537 ܿʽð岻ֺӸֹܼҪ 6. QBT2072.3-1994ǻе,ѹͨ㲿,ð岻ֺӸֹ 7. ASTM A312 (Designation:A312/A 312M - 04b):ܣӺӹ岻ֹܱ˵ 8. HGT 20537.3-1992װð岻ֺӸֹܼҪ 9. HGT 20537.4-1992װð岻ִھӸֹܼҪ 10. A 249/A 249M-03¯úӰֹܱ淶 11. A 688/A 688M-03 ˮӰֹ淶 |