Reduced Section Sub

Quzhou Shenjian Machinery Factory has over 20 years of experience in mining machinery. Our main products include electric DTH drill rigs, pneumatic DTH drills, drill rods, transition joints, air legs for rock drills, and casing pipes. The reduced section sub is a custom-made product. Customers need to specify the outer thread size, inner thread size, and length. We produce according to the customer's drawings. The main material is 40Cr alloy steel. The connection type is reduced-diameter male-to-female thread conversion. The diameter reduction range supports customization from 42 to 76 millimeters. The thread standard supports metric or imperial systems. The total length ranges from 50 to 200 millimeters. This range supports custom sizes. This product allows you to connect drill rods of different diameters.

We use high-quality alloy steel for all our products. Our processing equipment includes 30 CNC lathes, 3 milling machines, 2 friction welding machines, 1 machining center, and 1 steel pipe upsetting machine. For standard products, our delivery time is usually within one week. For custom products, the delivery time depends on the drawings. We communicate with customers throughout production. This ensures we deliver on time. We send pictures for customer confirmation after production. The delivery time for repeat orders is about the same as the first order. This reduced section sub is made with quality materials and precise machining.

We handle after-sales service through online channels. Customers can contact us online if they need to adjust the diameter reduction range or thread standard of the reduced section sub. We arrange production based on the drawings. Our products are wear parts. We do not offer long-term warranties. For special cases, we give fair compensation. If goods are damaged during transport, we advise customers to contact the shipping company. We do not accept third-party inspections. We support OEM orders. Customers can send drawings for production. Samples are available but not free. This product is a practical solution for connecting different rod sizes.

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