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2/3.5 Inch 50/90mm Bolt-in King Pin for Heavy Duty Semi Trailers, Trucks and Tractors
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20+ years of experiences (since 1999)
Implementing IATF 16949-2016
Implementing ISO 9001-2015
Quality testing by an independent laboratory
Warranty: 18 months since shipping date
Heat Treatment: Through hardened using a quenched and temper process, which produces a surface hardness of 302-363 BHN.
Technical standards: GB/T4606-2006, ISO337:1981, GB/T4607-2006, ISO 4086:2001
Sales volume (units）: 120,000+ per year
Raw material: 40Cr