JB/T 82-2015 Steel pipe welding neck flanges
1 Scope
This standard specifies the type, dimensions, technical requirements, and markings of steel pipe welding neck flanges.
This standard is applicable to steel pipe welding neck flanges with nominal pressures of PN2.5~PN200.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
YB/T 74 Specification for steel pipe flanges
JB/T 75 Steel pipe flanges - Types and parameters
3 Types and dimensions
3.1 Steel pipe welding neck flanges are divided into series 1 and series 2 steel pipe welding neck flanges, with series 1 being the preferred recommendation for use.
3.2 The types of sealing faces for steel pipe welding neck flanges as well as the applicable nominal pressure and nominal dimension ranges shall meet those specified in Table 1.
Table 1 Types of sealing faces for steel pipe welding neck flanges as well as the applicable nominal pressure and nominal dimension ranges
3.3 The types of steel pipe welding neck flanges shall meet those specified in Figures 1 to 5. The dimensions of the flange sealing faces shall meet those specified in Tables 2, 3, and 13. Other dimensions of the flanges shall meet those specified in Tables 4 to 13. The neck thickness dimension S in the tables is the minimum value, and the actual dimensions shall be determined based on user requirements or the dimension of the steel pipe.
Foreword i
1 Scope
2 Normative references
3 Types and dimensions
4 Technical requirements
5 Marking and example
5.1 Marking
5.2 Example
Figure 1 Steel pipe welding neck flange with flat face (FF)
Figure 2 Steel pipe welding neck flange with raised face (RF)
Figure 3 Steel pipe welding neck flange with male and female face (MF)
Figure 4 Steel pipe welding neck flange with tongue and groove face (TG)
Figure 5 Steel pipe welding neck flange with ring joint face (RJ)
Table 1 Types of sealing faces for steel pipe welding neck flanges as well as the applicable nominal pressure and nominal dimension ranges
Table 2 Dimensions of sealing face of flange
Table 3 Dimensions of ring joint face
Table 4 PN2.5 steel pipe welding neck flange
Table 5 PN6 steel pipe welding neck flange
Table 6 PN10 steel pipe welding neck flange
Table 7 PN16 steel pipe welding neck flange
Table 8 PN25 steel pipe welding neck flange
Table 9 PN40 steel pipe welding neck flange
Table 10 PN63 steel pipe welding neck flange
Table 11 PN100 steel pipe welding neck flange
Table 12 PN160 steel pipe welding neck flange
Table 13 FN200 steel pipe welding neck flange
