Supply & Demand

Material: 304/316L/2205/321/309S/310S/304D (stock + custom); Diameter: φ25mm-2000mm, multiple automated welded pipe production lines and large-diameter offline welded pipe production lines; Services: Acid washing + flaw detection + polishing processing, as well as raw material processing. Free flaw detection for materials above 219; Qualifications: TS certificate, type test certificate, ISO9001 certification, etc; Execution standards: national standards, European standards, and American standards.

Material: 304/316L/2205/321/309S/310S/304D (stock + custom); Diameter: φ25mm-2000mm, multiple automated welded pipe production lines and large-diameter offline welded pipe production lines; Services: Acid washing + flaw detection + polishing processing, as well as raw material processing. Free flaw detection for materials above 219; Qualifications: TS certificate, type test certificate, ISO9001 certification, etc; Execution standards: national standards, European standards, and American standards.

Material: 304/316L/2205/321/309S/310S/304D (stock + custom); Diameter: φ25mm-2000mm, multiple automated welded pipe production lines and large-diameter offline welded pipe production lines; Services: Acid washing + flaw detection + polishing processing, as well as raw material processing. Free flaw detection for materials above 219; Qualifications: TS certificate, type test certificate, ISO9001 certification, etc; Execution standards: national standards, European standards, and American standards.

This significantly enhances part consistency and overall yield rates. Equipped to perform at the level expected of an automatic tube & pipe re-rounding machine for stainless steel and thin wall tubes, the system integrates high-accuracy sensing technology, an intelligent servo control platform, and a precision mechanical transmission structure. Together, these components form a fully closed-loop control architecture—from real-time data acquisition and computational analysis to precise motion execution. The result is continuous in-line monitoring, automatic deviation compensation, and accurate control of critical parameters such as outer diameter, inner diameter, roundness, straightness, and wall thickness uniformity. Supported by advanced control algorithms and a high-rigidity machine frame, the equipment maintains stable precision output even during extended continuous production runs. It effectively eliminates common issues found in traditional machines, including ovality, eccentricity, surface scratching, and dimensional fluctuation. Each finished component consistently meets stringent industry quality standards. For manufacturers in automotive, fluid transmission systems, home appliances, and precision hardware sectors, this ensures dimensionally accurate, performance-stable, and quality-consistent base tube components—ultimately safeguarding downstream assembly accuracy and long-term product reliability.

The DN50 Unilateral Tube Upsetting Machine is a single-station precision forming equipment developed by Yanruilin specifically for end upsetting, thickening, and profiling of small-to-medium metal pipe fittings. Featuring a rigid heavy-duty frame and a powerful single-side extrusion upsetting mechanism, the machine is dedicated to end thickening, flaring, swaging, flanging, and marmon beading forming on materials including stainless steel, carbon steel, aluminum alloy, and copper. It serves a wide range of industries such as plumbing, gas fittings, automotive tubing, refrigeration systems, and hardware manufacturing, offering a dependable solution for local end reinforcement and precision forming.

Adopting a vertical structure and single-station and double-station precision extrusion forming mechanism, it integrates Swiss profile extrusion technology. It is suitable for forming processes such as single press fitting, ring pressing, flaring, reducing, bead forming, flanging and Marmon forming of stainless steel, carbon steel, aluminum alloy, copper alloy and other pipes. Balancing batch production stability and process versatility, it serves as core equipment for medium and large pipe forming in plumbing & gas, construction piping, automotive pipelines, shipbuilding, air conditioning and refrigeration industries.

The flange adopts forging process, and according to the different shape of flange, it adopts mold forging or free forging, Jiangsu Baochang has mature process and experience in the field of high temperature nickel-based materials. Material grade ALLOY825、ALLOY625、N10276.

Compared with the same grade of OLET, the 3D effect presents obvious advantages. The pipe fittings are forged as a whole, better ensure the consistency of the grain size and grain structure of the material, the arc at the branch makes the main pipe and the branch pipe perfectly connected, the inner and outer arc are processed and processed by the machining center as a whole, the consistency is extremely high, the use of high‑precision processing can be done without projecting each pipe separately, directly pre‑opening, and the enlarged skirt design can effectively reduces the stress concentration at the weld of the main pipeline; It reduces the stress concentration caused by defects such as weld penetration, incomplete fusion, porous slag inclusion, etc., and the hidden dangers affecting structural integrity. The SWEEPOLET and the main pipe are habitually connected, so that the weld is convenient for non‑destructive testing inspection such as radiation, and the reinforced branch pipe and arc adopt a connection design, so that its life is several times longer than the existing branch pipe fittings. The over‑all structure of the pipe fittings is long axial length, so that the upper branch have better support; The short radial length better ensures the axial consistency of the main pipeline. Validation: Static Stress Analysis.The results show that the yield resistance between 60℃ and 70℃ meets the requirements.In the AGPP project,it is safe and reliable in the 300LB natural gas pipeline.

20# / 20G Extra‑long Seamless Steel Pipe | Compliant with both GB/T9948‑2025 and GB/T5310‑2023 This product is extra‑long‑size seamless steel pipe, with a maximum single‑piece length up to 36 m, complying with two current national standards: GB/T 9948‑2025 Seamless Steel Pipes for Petrochemical and Chemical Installations GB/T 5310‑2023 Seamless Steel Tubes for High‑pressure Boilers

　XR-ZLCX Upwards block inner grooved tube machine is XR latest generation inner groovedcopper tube machine (hereafter call IGT machine). It combines the advantages of all existingIG machine and it is the ideal substitute for the traditional V-groove IGmachine, spinnerblock IG machine, and others. It is a new generation IGT machine. The machine is composed of coil pay off, IG tube shaping, drawing machine, receiving, control system and so on. It is used to produce φ5～φ9.52 IG copper tube.