Marine grade stainless steel construction with optional welded or detachable installation ensures minimal closure gaps and superior sealing , functionality across industrial applications Designed for professional and businesses managing commercial vehicles , including freight transport operators , and special mobile unit manufacturers requiring robust hardware solution Perfectly suited for cargo containers , refrigerated trucks , utility trailers , and customized mobile enclosures operating in harsh marine , high humidity outdoor , or cold chain environments Heavy duty 304 stainless steel hinges withstand 80-120kg loads per hinge , featuring construction with thicken arms and cores for extreme durability in demanding applications Engineered with a 180 degree unobstructed opening and integrated ball bearings , these door hinges provide smooth , quiet operate without occupying extra space , ideal for large container or truck access points, Manufacturer: ZUJIABAO