. SH 3065; Specification for tube fumace sharp bend for petrochemical industry;
2. SH 3406; Steel pipe flanges for petrochemical industry;
3. SH 3408: Steel butt-welding seamless fittings;
4. SH 3409: Steel plate butt-welding pipe fittings;
5. SH 3410: Forged steel socket-welding fittings;
6. HGJ10(HG/T21634): Forged steel socket-welding fittings;
7. HGJ514(HG/T21635): Carbon steel, low-alloy steel butt-welding seamless fittings;
8. HGJ528(HG/T21635): Steel plate butt-welding fittings;
9. GD87-1011: Typical design manual pof pipe parts for steam power plant;
10. DL/T515: Bends for power plant;
11. DL/T695: Steel butt-welding fittings for power plant;
12. SY/T0510: Steel butt-welding pipe fittings;
13. SY5257: Steel bends;
14. ISO3419: Non-alloy steel and alloy steel butt-welding fittings;
15. Q/320281aqd01-2000: STEEL BUTT-WELDING ELBOW WITH A STRAIGHT PIPE SECTION