China Melparts Precision Manufacturing Ltd

Self-tapping is the ability of a screw to advance when turned, while creating its own thread.This ability is sometimes created by a gap in the continuity of the thread on the screw. These edges cut a thread as the screw is driven in to the material. The cutting edge drills away the material,...

we have six kinds of weld pins, the length is in inch, 1/2" 3/4" 7/8" 1" 1 1/8" 1 1/2", ALL pins are made from 3.4mm wire, washer's diameter is 1"(25.4mm), the washers' thickness is 0.4mm. also, we can make the order per customer request, we can make the longer pins, etc

expansion bolts: a bolt that there is a thread on one side, and another side is wedged, the bolt is enwraped by sleeve. some incisions end of sleeve. how do expansion bolt work: Drill the hole, put them in and once tightened they can not be removed,The area under the loose sleeve is tapered so...

Self-tapping is the ability of a screw to advance when turned, while creating its own thread.This ability is sometimes created by a gap in the continuity of the thread on the screw. These edges cut a thread as the screw is driven in to the material. The cutting edge drills away the material,...

A fastener that taps and drills its own hole during application， this save time to drill holes then put screw, they are used widely in construction, than other screws, they are an economical and safey choice to use. .

Description Premium quality weld pins for the fastening of duct liner to metal duct work.Special Characteristics Weld pin (insulation weld pin): these fasteners are used to fasten insulation to the inside of sheet metal air ducts. These fasteners are usually applied when the ductwork is being...

expansion bolts: a bolt that there is a thread on one side, and another side is wedged, the bolt is enwraped by sleeve. some incisions end of sleeve. how do expansion bolt work: Drill the hole, put them in and once tightened they can not be removed,The area under the loose sleeve is tapered so...

Blind rivets are tubular and are supplied with a mandrel through the center. The rivet assembly is inserted into a hole drilled through the parts to be joined and a specially designed tool is used to draw the mandrel into the rivet. This expands the blind end of the rivet and then the mandrel snaps...

Weld pin (insulation weld pin): these fasteners are used to fasten insulation to the inside of sheet metal air ducts. These fasteners are usually applied when the ductwork is being fabricated. The fasteners have been specifically designed to work with all currently available duct liners and...

Our company is a manufactory which professional produce the weld pins, with an accidental chance, we got the order for weld pins. at the beginning, we come up against difficulties, we can't produce weld pins automation, we just make weld pins by handwork, By the hard efforts one year, we...