Polypropylene tape usage

polypropylene tape using steps are as follows:

& have spent

( 1) Steel pipe surface treatment: derusting. Remove rust should St3 level, mechanical descaling should reach Sa2 level, and in accordance with SYJ4 0 0, 7 - August 6.

( 2) Primer: should adopt special primers.

( 3) For primer table dry can tie belt. Note that this tape belong to SY/T0414 - 2007 rules of isolation membrane adhesive tape, bring isolation membrane adhesive tape in strict accordance with construction, general manufacturers can provide specific usage.

( 4) The trench backfill: through quality inspection qualified can ditch.