We (SDMP)are a professional manufacturer make all sizes precision Mould Springs.In the outside diameter range from 6mm to 70mm, Length from 10mm to 500. Special spring can design in our house and make performance according customers' requirement.
Spring Die Mould Part Factory(SDMP) inch die spring provide US, canada England mostly.Our quality spring make of 50CRVA,55CRSI or equivalent material purchased from Shanghai Baosteel.This type springs usually used in machine tools, valve design and mould industry.
SWZ Coil Spring according MISUMI Ultral Heavy Load is made from quality cold oil- tempered spring steel 50CRVA Alloy steel.This springs specially developed for customers’high requirements. Compared with SWB series springs, under same conditions,the load is 1.6~2.0times of SWB, can save much mold space and reduce spring consumption quantity.
There are complete conventies in our stocks for regular sizes, any urgent order we can send in 2 working days.