GD87 electric standard elbow
GD87 electric standard elbows are specified in Typical Design of Steam-Water Pipeline Parts and Components for Thermal Power Plants, including nine standard numbers: GD87-0215, GD87-0216, GD87-0217, GD87-0218, GD87-0219, GD87-0220, GD87-0221, GD87-0222, and GD87-0223.
Listed below are the materials, design temperatures, and pressure ratings of the electric standard elbows corresponding to these nine standard numbers, compiled by Renlong Pipeline:
1. GD87-0215
Material: 12Cr1MoV
Design temperature: t = 540℃
Three pressure ratings:
① GD87-0215-03, design pressure P = 9.81 MPa
② GD87-0215-04, design pressure P = 13.73 MPa
③ GD87-0215-04, design pressure P = 17.36 MPa
2. GD87-0216
Material: 10CrMo910
Design temperature: t = 230℃
Three pressure ratings:
① GD87-0216-03, design pressure P = 9.81 MPa
② GD87-0216-04, design pressure P = 13.73 MPa
③ GD87-0216-04, design pressure P = 17.36 MPa
3. GD87-0217
Material: 20#
Three pressure ratings:
① GD87-0217-03, design pressure P = 17.15 MPa, design temperature t = 230℃
② GD87-0217-04, design pressure P = 22.56 MPa, design temperature t = 240℃
③ GD87-0217-04, design pressure P = 28.22 MPa, design temperature t = 270℃
4. GD87-0218
Material: DIN17175-st45.8/Ⅱ
Three pressure ratings:
① GD87-0218-03, design pressure P = 17.15 MPa, design temperature t = 230℃
② GD87-0218-04, design pressure P = 22.56 MPa, design temperature t = 240℃
③ GD87-0218-04, design pressure P = 28.22 MPa, design temperature t = 270℃
5. GD87-0219
Material: 20#
Three pressure ratings:
① GD87-0219-03, design pressure PN = 4.0 MPa
② GD87-0219-04, design pressure PN = 6.4 MPa
③ GD87-0219-04, design pressure PN = 10.0 MPa
6. GD87-0220
Material: DIN17175-79 st45.8/Ⅲ
Four pressure ratings:
① GD87-0220-03, design pressure PN = 2.5 MPa
② GD87-0220-04, design pressure PN = 4.0 MPa
③ GD87-0220-04, design pressure PN = 6.4 MPa
④ GD87-0220-04, design pressure PN = 10.0 MPa
7. GD87-0221
This is a welded electric standard elbow.
Material: A3F when design temperature t ≤ 200℃; A3 when 200℃ ＜ t ≤ 300℃
Four pressure ratings:
① GD87-0220-03, design pressure PN = 2.5 MPa
② GD87-0220-04, design pressure PN = 4.0 MPa
③ GD87-0220-04, design pressure PN = 6.4 MPa
④ GD87-0220-04, design pressure PN = 10.0 MPa
8. GD87-0222
Material: 12Cr1MoV
Design temperature: t = 540℃
Three pressure ratings:
① GD87-0222-03, design pressure P = 2.71 MPa
② GD87-0222-03, design pressure P = 2.88 MPa
③ GD87-0222-04, design pressure P = 4.22 MPa
9. GD87-0223
Material: 10CrMo910
Design temperature: t = 540℃
Three pressure ratings:
① GD87-0223-03, design pressure P = 2.71 MPa
② GD87-0223-03, design pressure P = 2.88 MPa
③ GD87-0223-04, design pressure P = 4.22 MPa