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Ground screw pile is made of conical steel pipe and helix. To make conical pipe ends, the usage of automatic shrinking machine frees most of man power and improves the production. After heating from the induction coil, heated pipes are loaded onto automatic shrinking machine and finish shrinking stage.

Hardness of Metal Timber Connector Metal timber connectors are used to bind timber to timber, timber to steel, timber to concrete. Hot dip galvanization could protect wood connector from corrosion. And hardness of timber connector bracket itself is very important to its quality. Heavy timber metal connector is made of steel plate, after cutting, bending, flattening, forming, calibrating etc, wood connector is made th

Galvanized Steel Plate Galvanized steel plate is the raw material to produce steel garden hardware items: steel post support, metal timber connector, metal fence posts etc. Surface of steel plate is galvanized to anti-rust. Galvanization is an economic and effect method. Almost half amount of zinc in the world is used for galvanization. Definition: galvanization is to protect steel plate from corrosion,thus to furnis

Welding Process and Welding Method Welding is a key factor to the quality of steel post base, steel structural connectors and other metal welding parts. Welding is a process to unite two pieces of steel or above together with welding material (welding rod or welding stick) under high temperature or high pressure. There’re different welding processes according to various welding methods. Welding process is used

History of Metal Building Hardware　　 Metal building hardware begins with manual workshop like blacksmith shop, copper smith shop, tinsmith shop etc. In China, workshops to make nail, bolt, lock, knocker etc appeared as early as in Tang Dynasty dated AD 618. But in ancient times, most buildings are made from stone and wood, so metal building hardware including timber wood connector developed very slow in past thousand