Grade 8.8 Hex Bolt For Steel Structure
Materials:
Alloy steel: 40Cr/42CrMo/B7/35CrMo
Other available standards: ASTM A325,ASTM A490
GRADE: 8.8s/10.9s
SIZE RANGE(Inch): Dia.: 1/2~1 1/2 Length:1 1/4~12
SIZE RANGE(Metric)
Dia.: M12~M36 Length:40mm~300mm
Normal finish: Black oxide, Dacromet, phosphating, Hot dip galvanized,etc.
Head Marking: accept customer
Certification: CE,SGS,ISO 9001
From raw materials to end product delivery, it has a strict control program. Accurate completion is done about:
Standard parts: wiring- roughing – annealing- pickling – drawing – heading(cold forging or hot forging) – threading(rolling) – heat treatment -surface treatment –cleaning –inspecting-packaging
Customization parts: heading, stamping or casting-wire cut edm machine -CNC (machining center) -grinder threading (rolling) – heat treatment -surface treatment –cleaning –inspecting-packaging.
Grade 8.8 Hex Bolt Perfect Quality:
We have strict quality control from producing to delivery. Our company had strong technology support. We have cultivated a group of managers who are familiar with product quality, good at modern concept of management.
Inspection equipment:
Laboratory currently has the calliper, micrometer, depth and height gauge, thread gauge, plug and ring gauge, tension and torque gauge, hardness tester, salt spray tester, Film thickness tester, desktop direct- reading spectrometer, metallographic analyzer, carbon sulfur analyzer, multifunctional electrolysis thickness gauge, spectroscope, projector, hydraulic tensile tester, automatic screening machine, magnetic detection machines and a variety of specialized testing equipment.
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