China Stainless Steel CNC Machined Parts Factory

XCM CNC is an export-oriented stainless steel CNC machining factory for repeat supply programs in grades such as 304, 316, and 316L, using equipment lines such as Brother, Taichung, and Qiaofeng machining centers.

Passivation, polishing, material certificates, inspection reports, and cosmetic protection are organized within one production flow, which suits corrosion-resistant valve parts, chemical fittings, instrument enclosures, and stainless connectors. The factory runs under ISO 9001, ISO 13485, IATF 16949, and GJB9001C systems, with MOQ starting from 1 piece.

Machining Parameters and Tolerances

Large-Format Stainless Steel Machining for Structural Parts

Large stainless structural parts need machine travel and fixturing strategy to match at the same time. Three-axis milling travel reaches 3000 x 1600 x 1400 mm and can support plate or housing work around 2600 mm in length depending on fixturing. Turning diameter reaches 1200 mm over lengths up to 2500 mm, which suits large flanges, discs, and long shafts. Parts above about 500 mm are usually reviewed around +/-0.05 mm depending on material and clamping layout.

Thread and Keyway Machining on Industrial Stainless Components

Thread coverage ranges from internal M1.4 up to about M220, with pipe-thread standards including NPT, BSP, G, and PT. Keyways down to 1.0 mm width can be applied on shaft and coupling parts, while blind-thread effective depth can reach around 50 mm within a depth ratio near 4 x D. Threads are checked with go and no-go gauges or thread rings, and burr-free thread condition is controlled for fluid and assembly parts.

Batch Consistency and Dimensional Traceability

Repeat stainless orders depend on stable datums and repeatable inspection methods. Critical dimensions can be checked at full inspection level when required, while appearance and fit surfaces can follow agreed sampling plans. CMM reports, material certificates, and passivation reports can be issued by batch so that repeat orders continue from the same accepted baseline when drawings and processes stay unchanged.

Heavy-Duty Turning for Stainless Shafts and Flanges

Turning on stainless shafts and flanges needs control of radial and face runout together with fit grades. Shaft runout and face runout can be reviewed around 0.012 mm, while shaft tolerances can follow h6 or h7 when the drawing requires it. Slender shafts up to about L/D 15:1 need steady-rest support and staged operations, and sealing or bearing diameters are checked for both roughness and runout together.

Certified Systems with Imported Equipment Support

XCM CNC runs under ISO 9001, ISO 13485, IATF 16949, and GJB9001C systems and uses machining resources from brands such as DMG, Mazak, Matsuura, and Brother, supported by Hexagon CMM and 2.5D optical inspection for export programs.

Grade Batches Are Confirmed Before Production Release

Before repeat stainless supply starts, the factory confirms whether 304, 316, or 316L is required together with material condition and certificate scope. Matching material batches to order files helps repeat procurement programs that need stable corrosion-resistant fittings, valves, and enclosures.

Post-Treatment and Machining Stay on One Schedule

Passivation, bead blasting, or polishing are scheduled within the same factory production plan instead of being left for separate customer coordination. After surface treatment, parts move directly into reinspection so lead time and responsibility stay clearer.

Export Documentation Can Be Planned Before Shipment

Material certificates, dimensional reports, FAI files, and surface-treatment reports can be configured to order scope before production starts. This helps export projects manage customs paperwork, incoming inspection, and delivery acceptance more consistently.

Large-Part Travel Match Is Reviewed Up Front

Medium and large stainless housings, flanges, and mounting plates are assigned according to machine travel and fixturing strategy. Qiaofeng CNC 3016-4A offers 3000 x 1600 x 1400 mm three-axis travel, while the actual workable part size is reviewed against drawings and fixtures.

Polished and Sealing Faces Receive Transport Protection

After passivation or polishing, exposed surfaces can be protected with foam, carton, or wooden-case packaging selected for the part structure and shipment mode. Polished pieces can be isolated by layer to reduce surface damage and mixed-batch risk in export orders.