
CNC Milling
4-axis horizontal and 3-axis vertical machining centers with up to 1050 × 920 × 990 mm travel.
Typical job
Rotor housings, end plates, gearbox components, oil sumps, and other precision-machined structural parts.

ZHEJIANG, CHINA · RUN BY MSC-LEVEL ENGINEERS
SCPM machines rotors, shafts, housings, and other ±0.005 mm tolerance components for industrial equipment manufacturers worldwide. Every RFQ is reviewed by an engineer before quotation, with CMM reports on every batch.
Or reach us on WhatsApp +86 191 6495 7363 · vincy@sc-oem.com
Built to ISO 9001 · 14001 · 45001
Quality, environmental, and health-and-safety processes structured to ISO 9001, 14001, and 45001 frameworks. Third-party certification in progress.
Mazak Integrex Platforms
Single-setup turn-mill capability (e-650H & i-300) for parts up to Ø920 mm.
MSc Engineering Leadership
UK-trained engineer running in-house drawing reviews and DFM evaluations.
Rotating Equipment Roots
Built on over a decade of demanding vacuum pump and compressor manufacturing.
Global Logistics from Linhai
519 Changxi Road, Linhai, Zhejiang — 2 hrs from Ningbo Port. Direct shipping to global OEMs; English technical support.
Manufacturing Capabilities
Five machining services — from prototype runs through repeat production — covering the rotating equipment parts that make up most of our shop floor.

4-axis horizontal and 3-axis vertical machining centers with up to 1050 × 920 × 990 mm travel.
Typical job
Rotor housings, end plates, gearbox components, oil sumps, and other precision-machined structural parts.

Mazak Integrex e-650H and i-300 — turn, 5-axis mill, drill, and tap in one setup, up to Ø920 mm.
Typical job
Screw rotors, impellers, and other complex components with multi-axis machining requirements.

Precision CNC lathes up to Ø800 × 2000 mm with live tooling for cross-features without re-chucking.
Typical job
Bearing housings, seal carriers, shafts, sleeves, and other rotationally machined components.

Cylindrical and surface grinding to flatness 0.002 mm and Ra 0.1 µm on hardened steel.
Typical job
Rotor shafts, bearing journals, end plates, and other components requiring precision grinding after heat treatment.
Finishing add-ons — anodize, passivation, plating, powder coat, bead blast, polish, and water-based spray paint — coordinated as part of any of the machining services above.
See the coordination modelMaterials We Machine
Precision-machined carbon steel, stainless steel, and ductile iron components for industrial equipment and rotating machinery.
Industrial Material Focus
Suitable for industrial applications requiring corrosion resistance and stable machining performance.
Typical Applications
Pump rotors and sleeves
Corrosion-resistant housings
Seal-related components
Industrial Material Focus
Suitable for industrial applications requiring corrosion resistance and stable machining performance.
Typical Applications
Pump rotors and sleeves
Corrosion-resistant housings
Seal-related components

Material Review Support
Material standards drift between regions and suppliers. ASTM A105 forgings, DIN C45E, and JIS S45C are all close cousins of the carbon steel we run as 1045 — but the acceptable substitution depends on your service condition, heat treatment route, and inspection callouts.
Send us the drawing and we'll come back with a production-ready recommendation: the grade we'd source, the MTC we can supply, and any property differences worth confirming with your engineering team before we cut metal.

Quality Control
Quality control is embedded at every manufacturing node, not just applied at the shipping dock. We map every critical drawing tolerance to a verified metrology protocol before dispatch.
Full CMM Inspection & Reporting
Critical dimensions and GD&T features are inspected on calibrated CMMs, with inspection reports available upon request.
In-Process & Final Dimensional Checks
New production runs begin with first-article inspection, followed by dimensional checks during machining and final verification before shipment.
Material Traceability & Certification
Mill test certificates are available for customer-specified materials, with hardness verification performed after heat treatment when required.
Surface Finish Measurement
Surface roughness is measured using calibrated equipment to verify Ra, Rz, and other customer-specified finish requirements.
Pre-Shipment Inspection & Packaging
Parts are checked for quantity, packaging, and corrosion protection before shipment to ensure they arrive complete and ready for use.
About Us
SCPM grew out of precision rotating equipment manufacturing, where part accuracy decided whether a machine ran or failed. Today we bring that same standard to OEM customers — machining steel, stainless steel, and ductile iron components for industrial projects where the spec is non-negotiable.

Meet the Founder
Founder & Engineering Lead
MSc Mechanical Engineering · BSc Computer Science
“I personally review every customer drawing before we issue a quote — most RFQs come back within 24 hours with a DFM note. When you work with us, your project gets direct engineering oversight from day one.”
Blog
Engineering notes written by our team — based on real shop-floor jobs, supplier decisions, and the trade-offs we see week-to-week.
Written by SCPM engineers.

Specification Guide
A practical dry screw pump housing DFM review before quote: material, blank route, bore geometry, coating allowance, inspection path, and the RFQ inputs that prevent rework.
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Manufacturing Economics
Dry screw vacuum pump housing material selection between 304 stainless and ASTM A48 Class 35 gray iron — decided by process gas corrosion first, cost and machinability second.
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Manufacturing Economics
Twin-bore vacuum pump casing machining isn't won by tightening one number. The clearance-budget framing, a $650 coating failure, and what to put on the drawing.
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