ASME B16.9 Steel Pipe Cross Fittings are designed manufactured according to international standard of ASME B16.9. The common used material are carbon steel stainless steel. It may have one inlet three outlets three inlets one outlet.

The steel pipe cross dimension specification is designed as standard of ANSI/ASME B16.9, it can be equal redcuing. It has same function as butt weld tee that provide branch for connection, but less common used because the cost is higher manufacture technology.

Buttwelding Fittings are used in a piping system to change direction function of media, to branch off, reduce pipe size attach auxiliary equipment. They are availbale in multiple types as elbow, tee, cap, reducer, stub end oelt, that produced in cold hot forming based on ASTM A403 ASTM A234 specification.

ASTM A403 is representative standard speciciation for stainless steel buttweld fittings, the common used grades are SS304, SS316, SS321 SS310S. It is the abbreviation of stainless acid-resistant steel, resistant to weak corrosive media such as air, steam, water others. 

ASTM A234 WPB is common used grade in carbon steel material, matched with ASTM A106B / API 5L B / A53B pipes ASTM A105 flanges in the pipeline system. It has good properties with lower cost.

Specification of ASME B16.9 Cross Pipe Fittings

ASME B16.9 Steel Pipe Cross Fittings Drawing & Dimensions

Notes

1) Besides the above mentioned standards, the standards of GB/T 10752   SH 3408   SH 3409   HG/T 21635   HG/T 21631 SY/T 0510   DL/T 695   EN 10253 etc.are also applied.

2) For the straight crosses with DN≥650(NPS 26) the reducing crosses with DN≥350(NPS 14 , the outlet sizes are recommended to use (that mean the other sizes may be applied).

3) For the crosses with the sizes larger than that listed in the above table,they will be supplied subject to the sized agreed by purchaser manufacturer according to manufacturer's size.