A hydraulic manifold leaks where three things meet: a cross-drilled intersection, a sealing counterbore and a thread. Our process attacks all three at the same time.

• Cross-hole intersections are drilled with coolant-through carbide and then back-chamfered, so no burr is left to break loose into the circuit.
• Counterbores are interpolated to Ra 0.8 with flatness 0.01 mm — the O-ring seals on a machined seat, not on a drilled surface.
• Wall thickness between crossing galleries is checked in the DFM review, so a 350 bar block does not become a 120 bar block because two holes nearly touch.
• Pressure test is a production step, not an extra: every block is proof tested and the result is recorded against the serial number.

Stainless is dimensionally honest but thermally stubborn. Our programmers compensate cutter paths for 316L work hardening and heat build-up, and the inspection plan measures the part at 20°C before sign-off.

Standard catalogue blocks rarely match a real circuit. We build to your schematic, your drawing or a sample.

• Input — hydraulic schematic, 3D model, 2D drawing or a failed block to copy and improve.
• Value engineering — we propose simpler port layouts, common thread families and fewer setups to cut unit price before the first chip is made.
• Flexible quantities — 1 piece for a test bench, 30 to 5,000 pieces for a production line.
• Assembly — cartridges, plugs, test points, nameplates and pressure tags fitted in-house.
• Aluminium alternative — where weight matters we machine the same design in 6061-T6 or 7075 with hard anodizing.

Confidentiality is a contractual obligation, not a promise. Every custom CNC machining parts project can be covered by a signed NDA before the first file is opened.

• NDA on request — bilateral non-disclosure and non-circumvention agreement signed before data transfer.
• Isolated production cell — confidential parts run in a dedicated area with restricted access badges.
• No portfolio leakage — customer drawings, part photos and brand marks never appear in our samples, catalogues, website or social media.
• File control — CAD data stored on an access-controlled server, per-project folders, deleted on request after delivery.
• Named project code — your part number can be replaced by an internal code on travellers, labels and packing lists.
• Supplier silence — sub-suppliers see a code, not your drawing title block or brand.

Dongguan Changxinda Precision Technology Co., Ltd. has machined custom metal parts since 2008. The plant runs 4-axis and 5-axis machining centres, turn-mill lathes, CNC lathes, surface grinders and wire EDM, supported by a metrology room with CMM and roughness testing.

Today 90-102 people serve 200+ customers with 50-60% of output exported to Europe and North America. Annual sales sit between USD 10 and 20 million. ISO 9001:2015 certified, English-speaking engineering support, one project engineer per account from RFQ to shipment.

• Capacity reservation — forecast volumes are blocked in the weekly schedule; a rush order never cannibalises a serial order slot.
• Six-day, two-shift production — 07:30-22:00, with weekend shifts in peak season.
• Call-off stock — buffer quantities kept for running programs, invoiced on shipment.
• Weekly reporting — machine status, quantity complete, expected ship date, photo updates.
• Shipping — express for samples in 3-5 days, air and sea for series, EXW / FOB Shenzhen / CIF.