SHANDONG PIPESOL FLOW EQUIPMENT CO.,LTD
PSL wide tolerance stepped couplings are designed to join pipes with different sized outside diameters(use Restraint Coupling). This range is cast from ductile iron and is a cost effective solution in situations usually joining pipes consisting of different materials. PSL wide tollerance stepped couplings are finished with a variety of WRAS approved coatings, suitable for potable water. There are also a range of coatings for our wide tollerance stepped couplings designed for sewerage applications.