Specification for steel butt-welding pipe fittings for the petroleum industry.  Part 1,   wrought carbon and ferritic alloy steel fittings / 
British Standards Institution. 
 - 17 pages :  illustrations,   33cm. 
 - British standard ;  BS 1640 : PART 1 : 1962 .
 - British standard ;  BS 1640 : PART 1 : 1962 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum pipelines--Welding--Great Britain.<br/>Pipelines--Welding.