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B51-14 (R2019) – Boiler, pressure vessel, and pressure piping code

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ISO 1721:1974

ISO 1721:1974 Rock drilling – Extension drill-steel equipment for percussive long-hole drilling – Reverse-buttress-threaded equipments 1 1/16 and 1 1/4 in (27 and 32 mm)

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SKU: 60627c39e54d Category:

Description

Specifies the basic dimensions for equipment. Gives a list of components; tabulates together with figures: shank adapters for central flushing, hexagon type and lug-shank type; extension rods; coupling sleeves; four-wing bits; reverse-buttress threads; hollow hexagonal bars for extension rods; hexagonal drill-steels.

Edition

1

Published Date

1974-08-01

Status

PUBLISHED

Pages

6

Language Detail Icon

English

Format Secure Icon

Secure PDF

Abstract

Specifies the basic dimensions for equipment. Gives a list of components; tabulates together with figures: shank adapters for central flushing, hexagon type and lug-shank type; extension rods; coupling sleeves; four-wing bits; reverse-buttress threads; hollow hexagonal bars for extension rods; hexagonal drill-steels.

Previous Editions

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