I-ASME SA 234 GR WPB PIPE Ellow nokunye ukufakwa kwamapayipi kungangena ngobukhulu obuhlukile ngokuya nge-ASME \
ANSI B16.9 kanye ne-B16.28 nama-WPB), i-WP9, wp11, i-WP22 ne-WP91. Ihlanganisa ukufakwa kwamapayipha kwe-butt-welded of elbow, tee, ukunciphisa, i-cap kanye nesiphambano, nezinye izinsimbi ze-socker, ukufakwa kwamapayipi.