SWS Ships 105 P110 Pup Joints with TPCO TP-CQ Premium Threads

In August 2026, Jiangsu SWS Petroleum Technology shipped 105 P110 double-pin pup joints after machining TPCO TP-CQ pin threads on customer-supplied material. The material arrived on August 29, and the batch shipped on August 30, two calendar days before the September 1 delivery date listed in the order record.

The order was for 4½-inch pup joints with a 114.3 mm outside diameter, a 7.37 mm wall thickness, and an effective length of 700 ± 50 mm. The customer supplied the material, and SWS handled the specified thread machining. This arrangement gave the customer a way to use material they had already sourced while placing the premium threading work with a shop authorized for TP-CQ.

What the TP-CQ machining order covered

The order described the finished component as a double-pin pup joint and identified TP-CQ pin threading as the machining scope. Those are two separate details worth confirming on an RFQ: the component description identifies the end configuration, while the drawing and order specify which machining operations the supplier is expected to perform. The same distinction applies to length. This order specified an effective length of 700 ± 50 mm, so the RFQ should carry that dimension as shown on the drawing.

TP-CQ was explicitly listed on the TPCO authorization held by SWS at the time of this order. The authorization covered pin and single-ended box threading within the scope of the licensing agreement. This batch was recorded as a pin-thread machining job.

Have a batch that needs TP-CQ threading?

If you already have material and are looking for a TP-CQ threading supplier in China, send SWS your drawing, material grade, outside diameter and wall thickness, quantity, and required shipment date. Indicate which ends need machining, when the material will be ready, and what inspection documents your project requires. With those details, SWS can review the machining scope, applicable authorization, and production schedule before quoting.