Wheatland’s MLT is the black lightwall threadable product that is perfectly matched for most sprinkler pipe systems. Easier and safer to weld than zinc coated pipes. Wheatland’s MLT offers you exceptional hydraulics , lighter weight, and unparalled value in an economical pipe. Wheatland’s MLT is the ideal pipe for branch use in wet, dry, preaction and deluge systems. It can be joined with threaded couplings, roll grooved or plain-ended couplings or it may be welded.