Owing to our broad item variety and prosperous experiences in this market, The team has taken component in the making and revising of ISO/TC100 international chain normal several many years in good results and hosted the 16th ISO/TC100 Intercontinental yearly conference in 2004. “We are usually serving our clients with our greatest items.” Line pipe:
API SPEC 5L-2011 (Line EPT Specification), comEPTd and pubEPTTd by the American EPT Institute, is utilized globally. The major content of the tube is steel grades these kinds of as L245, L290, L360, L415, L480, GR.B, X42, X46, X56, X65, X70, X80 and X100.
According to the functionality specifications of GB/T9711.1 pipeline metal pipe, relying on the tempering temperature, tempering can be divided into the pursuing types:
[one] Reduced temperature tempering (a hundred and fifty-250 degrees)
The construction obtained by reduced temperature tempering is tempered martensite. The objective is to reduce the inner tension and brittleness of the quenched steel unEPTTthe premise of mainXiHu (West EPT) Dis.Hu (West EPT) Dis. the higher hardness and large put on resistance of the quenched metal, so as to stay away from cracking or untimely failure in the course of use. It is largely utilized for all kinds of substantial carbon chopping instruments, measuring tools, GB/T9711.one pipeline metal pipe, rolling bearings and carburizing elements, and so forth., the hardness soon after tempering is EPTTly EPTC58-sixty four.
[two] medium temperature tempering (250-500 degrees)
The tissue received by medium temperature tempering is tempered troostite. Its purpose is to attain higher yield power, elastic limit and substantial toughness. For that reason, it is primarily employed for the therapy of numerous GB/T9711.1 pipeline steel pipes and very hot perform dies. The hardness after tempering is EPTTly EPTC35-50.
[3] large temperature tempering (five hundred-650 degrees)
The structure received by higher temperature tempering is tempered sorbite. Conventionally, the heat treatment blended with quenching and substantial temperature tempering is called quenching and tempering treatment, and the goal is to receive complete mechanical houses with good toughness, hardness, plasticity and toughness. For that reason, it is broadly utilized in EPTTant structural elements this sort of as vehicles, GB/T9711.one pipeline steel pipes, EPTT tools, and many others., these kinds of as connecting rods, bolts, EPTs and shafts. Right after tempering, the hardness is EPTTly HB200-330.
Merchandise requirements variety: outer diameter 95mm-426mm wall thickness four.5mm-60mm
