|1-blank casing should be according to (api-5ct) with 6 m length |
2-pipe threads should be according to api-5b (8short round threads per inch)
3-pipe should be provided with long coupling screwed power tight and with threads similar to pipe threads
4-the threads should be provided with steel protector for both sides
5-each pipe should be stamped and paint stenciled indicate API monogram, size, weight (ib/ft), grade and length.
6-pipe should be varnished with anti corrosion paint.
7-api certificate should be provided with offer.
8-all the pipe should be 6 meter long.
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