Frequently Asked Questions
Answers about extrusion press components, marine shafting, custom manufacturing, lead time, MOQ, and quality inspection.
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Extrusion Press Components FAQ
We specialize in copper, aluminum, magnesium, silver and steel extrusion press spare parts, covering the full range from 6MN to 250MN. Key products include extrusion containers, extrusion stems (solid and hollow), dummy blocks / fixed dummy blocks, dies / die holders, piercing mandrels, main cylinders / main plungers, cooling bed felt, electric heating tubes, hydraulic pumps, motors, and other wear-resistant parts.
Our flagship product is the extrusion container. We have successfully manufactured the world’s largest 250MN extrusion container using H13 tool steel with a multi-layer shrink-fit assembly structure. Our containers are engineered to withstand extreme pressures and temperatures up to 1,200°C.
We primarily use H13 tool steel (ASTM standard), as well as 5CrNiMo, 5CrMnMo, and other specialty alloys depending on the application and customer requirements.
Yes. We specialize in custom and non-standard extrusion press components. Our engineering team can work from your drawings to optimize designs for manufacturability, and we can also assist with reverse engineering if drawings are not available.
Our extrusion components cover the full pressure range from 6MN to 250MN, serving small extruders up to the world’s largest extrusion presses.
Our max machining capacity: max turning diameter 5,180mm, max turning length 16,000mm, max vertical turning diameter 4,000mm, max deep-hole drilling depth 16,000mm, maximum crane lifting capacity 130 tons.
Yes. We offer repair and refurbishment services for extrusion containers, extrusion stems, dummy blocks, and other wear-resistant parts. Our deep-hole drilling and honing equipment allows us to restore worn components to their original specifications.
We implement strict quality control at every stage. Key inspection procedures include hardness testing (Leeb, Brinell, Rockwell), ultrasonic flaw detection, dimensional measurement, and pressure testing for hydraulic components
60-120 days.
Emergency orders: We can expedite — please contact us
Yes. We can provide mill test certificates, chemical composition analysis, and mechanical property test reports upon request.
Marine Shafting & Rudder Systems FAQ
We manufacture complete ship shafting and rudder systems, including propeller shafts, intermediate shafts, rudder stocks, rudder pintles, rudder trunks, rudder gudgeons, hydraulic nuts, hinge bolts, and other associated components.
Our max machining capacity: max turning diameter 5,180mm, max turning length 16,000mm, max vertical turning diameter 4,000mm, maximum crane lifting capacity 130 tons.
Yes. We offer complete package delivery — from raw forging to finish machining, classification society inspection, stainless steel sleeve shrink fit, flange hole reaming and hinge bolt fitting, hydraulic nut pressure testing, and rudder stock / rudder blade matching. We deliver the entire system ready for installation.
We work with carbon steel (e.g., 45 steel), alloy steel (e.g., 40Cr, 42CrMo), and stainless steel grades upon request. Material selection is tailored to the specific application and classification society requirements.
Yes. We can arrange inspection by major classification societies including CCS, DNV, ABS, LR, and BV upon customer request. Our quality system is aligned with marine industry standards.
Yes. We have the precision boring and reaming equipment to perform flange hole reaming and hinge bolt fitting to ensure proper alignment and assembly of shafting connections.
We implement strict quality control at every stage of marine component manufacturing, including raw material inspection, dimensional measurement, hardness testing, ultrasonic flaw detection, hydraulic pressure testing, and final dimensional verification.
Yes. We provide mill test certificates, chemical composition analysis, mechanical property test reports, and can also include classification society inspection reports upon request.
60-120 days.
Please contact us with your specific requirements for an accurate quotation.
We use standard export packaging suitable for heavy oversized marine components, including steel cradles or heavy-duty wooden crates, rust-proof coating and protective wrapping, and full container loading (FCL) or break-bulk shipping for oversized items. Shipping terms: FOB Dalian or CIF as requested.
Mining Equipment FAQ
We manufacture structural parts, forged parts, cast steel parts and welded parts for mining equipment, including slewing large gear rings, roller frames, upper/lower roller rings, roller wheels, weight wheel assemblies, sky wheel shafts, boom root shafts, push-press shafts, drum shafts, front/rear guide wheel assemblies, sliding boots, belt pulleys, sky wheel assemblies, saddles, hopper gates, lifting beams, A-shaped frames, reducer housings and counterweight boxes.
We use high-strength carbon steels, low-alloy steels and wear-resistant alloys depending on the application. Material selection is tailored to impact load, abrasion conditions and customer requirements.
Yes. We specialize in custom fabrication based on customer drawings. Our capabilities cover forging, casting, welding and precision machining for mining equipment components.
Our max machining capacity: max turning diameter 5,180mm, max turning length 16,000mm, max vertical turning diameter 4,000mm, maximum crane lifting capacity 130 tons.
Power Station Equipment FAQ
We manufacture steam turbine rotors, steam turbine cylinders, generator main shafts, water turbine main shafts, wind turbine main shafts, rotary solid-liquid separators and nuclear power pump shaft turnover devices.
We use heat-resistant alloy steels, high-strength alloy steels and corrosion-resistant steels depending on the application and operating conditions.
Yes. We manufacture wind turbine main shafts and water turbine main shafts with precision forging and machining, suitable for wind power and hydropower applications.
We implement strict quality control including raw material inspection, dimensional measurement, hardness testing, ultrasonic flaw detection and final verification.
Rolling Mill Equipment FAQ
We manufacture roll changing equipment, coil handling equipment and strip processing equipment, including roller replacement carts, uncoilers, pinch rolls, reeling assisting devices, turnover devices and descalers.
Yes. We specialize in custom design and manufacturing based on customer drawings and rolling line conditions.
Yes. We can provide technical documentation and remote guidance. On-site support is available upon request for major projects.