NPFC - MIL-E-17624
EXPANDER, TUBE, ROLLER, BOILER TUBE
Organization: | NPFC |
Publication Date: | 11 August 1987 |
Status: | active |
Page Count: | 10 |
scope:
This specification covers boiler tube expanders of the self-feeding parallel rolling type for use in expanding carbon steel and alloy steel tubes in all types of boilers.
Tube expanders shall be of the following types and classes, as specified (see 6.2):
Type I - Plain expander Class 1 - General application Class 2 - Economizer Class 3 - Superheater Class 4 - Air heater Type II - Long reach expander Type III - Reverse expander
intended Use:
The tube expanders are intended for use in the belling and expanding of boiler tubes in drums and headers of steam boilers. The expanders may be used with either hand- or power-operation and... View More
Document History



