钢对焊管件 用于全工作压力下的异径管

Steel butt-welding pipe fittings

Reducers for use at full service pressure

Formstücke zum Einschweißen; Reduzierstücke; voller Ausnutzungsgrad

This standard, together with February 1991 edition of DIN 2616 Part 1, supersedes June 1964 edition of DIN 2616.

In keeping with current practice in standards published by the International Organization for Standardization (ISO), a comma has been used throughout as the decimal marker.

Dimensions in mm

1 Field of application

This standard specifies seamless and welded, concentric and eccentric steel reducers that are intended to be butt welded to pipes and that are rated for the same internal pressure as pipes having a wall thickness as specified in tables 1 and 2 (cf. clause 4).

2 Types, dimensions and designation

2.1 Concentric reducers (K)

Figure 1. Concentric reducer

Designation of a welded (W), concentric (K) reducer in accordance with this standard (2), where d₁ is equal to 114,3 mm, s₁ is equal to 3,6 mm, d₂ is equal to 60,3 mm, and s₂ is equal to 2,9 mm, made from material belonging to material group B as in DIN 2609 (B):

Reducer DIN 2616 – 2 – K – 114,3 × 3,6 – 60,3 × 2,9 W – B

Continued on pages 2 to 13

1

Table 2. Concentric reducer dimensions

A dash in a box indicates a size that has not been standardized.

2

Table 2 (continued).

A dash in a box indicates a size that has not been standardized.

3

Table 2 (continued).

4

Table 2 (continued)

5

Table 2 (concluded)

A dash in a box indicates a size that has not been standardized.

6