CNC Machining Parts 1 kg to 30,000 kg

Songyan Machinery produces machined, welded and fabricated parts from 1 kg up to 30,000 kg per piece. Horizontal boring centers accept workpieces up to 50 t with 5,000 mm of X travel, vertical turning reaches the Ø3,200 mm class, and cylindrical grinding handles up to Ø630 × 4,000 mm.

CNC turning and turn-milling; CNC milling, horizontal boring and 5-axis machining; cylindrical, surface and gear grinding; laser, plasma and flame cutting; robotic and manual welding; and complete fabrication. Heat treatment, gear cutting, surface treatment, coating and assembly are handled within the same order.

Carbon steel, alloy steel, stainless steel including duplex 2205 and super duplex 2507, nickel alloys such as Inconel 625 and 718, Hastelloy and Monel, tool and die steels such as D2 and H13, titanium alloys including Grade 5 (Ti-6Al-4V), aluminium alloys such as 6061 and 7075, copper alloys including brass and bronze, cast iron, cast steel and engineering plastics.

Yes. Titanium and nickel alloys are machined with rigid setups, sharp carbide or ceramic tooling, high-pressure coolant and controlled cutting parameters to prevent work hardening and heat damage. Material certificates and PMI verification are available on request.

Machine positioning accuracy is 0.01 mm, or 0.008 mm on our precision horizontal centers. Ground diameters typically reach IT5–IT6 with Ra 0.4–0.8 µm. Achievable tolerances depend on part size, material and geometry, so every drawing is reviewed before quoting and the tolerance is confirmed up front.

Horizontal boring and milling centers with up to 50 t table load and X 5,000 × Y 3,200 × Z 2,500 mm travel; gantry and 5-axis gantry machining centers; vertical turn-mill centers to the Ø3,200 mm class; a 400 t press brake; a 6 t robotic welding positioner; ten heat-treatment furnaces; and a gantry CMM measuring 5,000 × 4,000 × 2,500 mm.

Our laboratory performs chemical analysis by direct-reading optical emission spectrometry, ICP-AES and carbon-sulfur and O/N/H analyzers; mechanical testing including room- and elevated-temperature tensile, impact, hardness, creep and friction-wear tests; and metallographic examination of microstructure, grain size and case depth.

A 2D drawing (PDF or DWG) with tolerances, a 3D model (STEP or IGES) where available, the material grade, quantity, and any heat-treatment, surface-finish or inspection requirements. Send them to sales@symachiningparts.com or by WhatsApp to +86 189 1530 7612.

Yes. We machine single prototypes, small batches and repeat production runs, and can hold stock for scheduled call-offs.

Typically 2–4 weeks for prototypes and samples, 4–8 weeks for production batches and 6–12 weeks for heavy weldments and large forgings. The exact lead time is confirmed on every quotation.

Every order ships with a dimensional inspection report and material certificate. When specified, we also supply EN 10204 3.1 certificates, MT, UT and hardness reports, CMM reports, chemical and mechanical test reports, balancing certificates, coating reports and first article inspection. Third-party inspectors are welcome.

Yes. Ten furnaces cover normalizing, quenching and tempering, annealing and solution treatment; induction hardening reaches 12 mm depth; carburizing is available for gears and racks. Finishes include zinc, nickel and hard chrome plating, black oxide, anodizing for aluminium and industrial paint systems applied on an automatic coating line.

Parts are protected with rust-preventive oil and VCI film, then packed in fumigation-free plywood cases or bolted to steel skids for heavy items. We ship FOB Shanghai or Jiangyin, CIF, CFR or DDP, by sea, air or rail.

Yes. Drawings and models are used only to quote and manufacture your parts and are never shared with third parties. We are happy to sign your NDA before you send files.

Our factory is in Xiagang Industrial Park, Jiangyin City, Jiangsu Province, China, about two hours by road from Shanghai. We have exported machined parts and gear racks to customers in the United States, Europe and Asia since 2007.