Orbital TIG welding system for tubes to tube sheets in heat exchangers and similar equipment. The standard set comprises a PT40 welding head and an FXT20 programmable power source. PT40 is for tube ends flush with the tube sheet; protruding tube ends are outside its stated scope. Reference tube OD 10-38 mm and wall thickness 0.5-2.0 mm, subject to joint and welding-procedure confirmation. Water-cooled PT40 head and air-cooled FXT20 power source. Autogenous welding without filler wire or AVC arc-length control. FXT20 supply: 220 V single phase, 50/60 Hz; welding current 5-200 A. Standard preparation: 5-10 working days, subject to stock and factory schedule. Custom configurations require technical review; shipping time additional. Packaging: two aviation aluminum cases. Trade unit: one configured system. The product photo shows the PT40 head. Send tube dimensions, material, joint drawing and destination for configuration and quotation. Reference official storefront price: USD 7100 per selected configured system, EXW; freight, taxes and duties additional. Confirm final configuration and quotation with sales. Payment: T/T, 100% in advance or 50% deposit with balance before shipment. Website: https://fyid-feiyide.com/.