Precision CNC Machined Carbon Steel Hydraulic Manifold
Precision CNC machined carbon steel hydraulic manifold blocks with intersecting internal galleries, cartridge valve cavities, and port threads machined to tight positional tolerance for leak-free hydraulic system integration. Available in 1045, 4140, GGG-40 ductile iron, and 8620 with options for zinc-nickel plating, phosphate coating, and hydrostatic pressure testing. Max block size 800 × 600 × 400 mm, up to 20 ports per block.
Manufacturing Processes :
CNC turning (multi-axis with live tooling), CNC milling (3/4/5-axis), cylindrical grinding, centerless grinding, honing, thread cutting, broaching, drilling & tapping, EDM wire-cut (partner)Heat Treatment :
Quench & temper | Case hardening / carburizing | Induction hardening | Solution annealing | Vacuum hardening | Nitriding | Stress relieving. Every heat treatment batch ships with time–temperature chart and hardness report.Surface Treatment :
Zinc plating (clear/yellow passivation) | Zinc-nickel alloy | Electroless nickel | Hard chrome plating | Black oxide | Phosphating (MnPO4) | Passivation (ASTM A967) | Electropolishing | Anodizing (aluminum) | Powder coatingCustomizable :
YesOrder(MOQ) :
Prototype: 1–10 pcs (no MOQ for billet-machined parts). Small batch: 10–500 pcs. Series production: 500–50,000+ pcs/month.Specifications
Shengtao's precision CNC machined carbon steel hydraulic manifold blocks begin as solid bar stock or plate and are transformed into precision fluid-routing components through a carefully planned machining sequence on multi-axis CNC machining centers. The sequence is designed so that intersecting internal galleries — the network of drilled passages that route hydraulic fluid between cartridge valve cavities and external ports — are produced from a common datum face, ensuring that every port thread, cavity bore, and mounting hole is positioned relative to every other feature with a positional tolerance of ±0.05 mm. This is the core discipline of manifold machining: if a gallery intersection is off by even a fraction of a millimeter, the resulting flow restriction or leakage path can render the entire hydraulic system unreliable. After drilling and boring, all gallery intersections are mechanically deburred to remove the intersection burrs that would otherwise break loose in service and contaminate the hydraulic fluid, and the completed manifold is high-pressure flushed to remove any residual chips.
Material selection is driven by working pressure, fluid compatibility, and environmental conditions. 1045 medium-carbon steel is the most cost-effective choice for industrial manifolds operating at moderate pressures with standard mineral oil, and it can be selectively induction-hardened on mounting faces if required. 4140 (42CrMo4) is specified for high-pressure manifolds where through-hardening after machining to 28–40 HRC provides the strength margin for continuous operation at 350–420 bar. For manifolds that will operate in corrosive or high-humidity environments, electroless nickel plating provides uniform coverage on every internal surface, including deep galleries and blind holes that electroplating cannot reach. GGG-40 ductile iron is an alternative when vibration damping and machinability are priorities, particularly for large manifold blocks in stationary industrial equipment. For manifolds requiring a hard, wear-resistant surface on cartridge valve bores with a tough core, 8620 (20CrMnTi) case-carburized to 58–62 HRC provides exceptional durability under high-cycle conditions.
Every manifold is dimensionally inspected on CMM, with special attention to cartridge cavity geometry, port thread quality (100% gauge-checked), and flatness of mating surfaces. Optional hydrostatic proof testing at 1.5× working pressure provides documented evidence of structural integrity and leak-tightness. The finished manifold ships with all ports capped and plugged, a dimensional inspection report, material certificates, and — where specified — a hydrostatic test certificate. Contact us with your hydraulic circuit diagram or 3D model for a manifold quotation within 24 hours.
Precision CNC Machined Carbon Steel Hydraulic Manifold is one of our core strength products. We maintain substantial inventory to ensure rapid delivery and can also customize extra-large diameter seamless pipes according to your specific requirements. Additionally, we provide comprehensive services including spectroscopic analysis, mechanical property testing, pressure testing, and non-destructive testing (NDT).
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Note: If you do not find a Precision CNC Machined Carbon Steel Hydraulic Manifold that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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FAQs
Q: What machined parts and fabrication services does Shengtao provide?
Shengtao is a China-based, ISO 9001-certified one-stop manufacturer delivering precision-machined and fabricated metal parts across 10 product categories:
• CNC Precision Machined Parts — turned, milled, and 5-axis complex components
• Stamped & Formed Metal Parts — progressive die stamping, deep drawing, sheet metal fabrication
• Welded & Fabricated Steel Assemblies — structural weldments, pressure vessel shells, pipe spools
• Hydraulic & Pneumatic Components — honed cylinder barrels, chrome-plated piston rods, valve bodies
• Automotive Precision Parts — drivetrain, suspension, steering, and engine components
• Surface-Treated Steel Parts — mirror polishing, electropolishing, hard chrome, zinc/nickel plating
• Precision Tube & Pipe Machined Parts — tube end machining, honing, pipe spool assemblies
• Laser Cut & Waterjet Cut Parts — precision 2D profiles up to 150 mm thick
• Machined Pipe & Tube Fittings — threaded fittings, forged flanges, custom connectors
• Special Alloy & High-Performance Parts — Inconel, Hastelloy, Titanium, tool steel components
We work from your drawings, providing customized parts — we do not sell standardized off-the-shelf items. Send your RFQ with a drawing to start a quotation.
Q: Can you manufacture custom parts from my engineering drawings? What file formats do you accept?
A: Yes — custom manufacturing to your drawings is our core business. We accept:
• 2D drawings: PDF, DWG, DXF
• 3D models: STEP (.stp), IGES (.igs), SolidWorks (.SLDPRT / .SLDASM), CATIA, Inventor
The process is straightforward:
1. Send your drawing/model with material specification, quantity, and any special requirements.
2. We sign an NDA before reviewing your files.
3. Our engineering team performs a DFM (Design for Manufacturability) review and flags any concerns.
4. We send a formal quotation with price, lead time, and technical notes within 24–48 hours.
We handle everything from raw material sourcing through machining, heat treatment, surface finishing, inspection, and export packaging — delivering parts ready for your assembly line.
Q: What materials can you source and machine for my parts?
A: We source and machine a comprehensive range of metals, all with certified mill test reports (MTR):
Stainless steel: 303, 304, 316, 316L, 321, 410, 420, 430, 2205, 2507 (duplex/super duplex)
Carbon steel: A36, 1020, 1045, A105, A106 Gr.B, API 5L X42–X80, S235, S355
Alloy steel: 4140, 4340, 8620, 42CrMo4, 34CrNiMo6, 20CrMnTi, A387 Gr.11/22
Aluminum: 6061-T6, 7075-T6, 5052, 5083
Tool steel: D2, H13, M2, P20, S7
Nickel alloys: Inconel 600/601/625/718, Hastelloy C-276/C-22, Monel 400
Titanium: Grade 1, Grade 2, Grade 5 (Ti-6Al-4V), Grade 23 (Ti-6Al-4V ELI)
Brass & copper: C36000, C11000, C26000
If your specification calls for a material not listed above, please ask — we work with approved steel mills and can source commercial grades, pressure-vessel grades, and AMS/aerospace grades.
Q: Do you offer welding and fabrication for complex assemblies, including code-compliant work?
A: Yes. Welding and fabrication is a core Shengtao capability, covering single-part weldments through to fully welded structural frames, pressure vessel shells, and pipe spools.
Welding processes: SMAW, GMAW/MIG, GTAW/TIG, SAW (submerged arc), FCAW, orbital TIG
Welder qualifications: AWS D1.1 / D1.6, ASME Section IX, EN ISO 9606
NDE capabilities: 100% VT, PT, MT, UT, RT (X-ray) available, including third-party witness
We fabricate to:
• ASME Section VIII Div.1 — pressure vessels
• ASME B31.1 / B31.3 / B31.4 — power, process, and liquid piping
• AWS D1.1 — structural steel
• PED 2014/68/EU — European pressure equipment
• NACE MR0175 / ISO 15156 — sour service
Every fabrication ships with a full data book: weld map, WPS/PQR, welder qualifications, NDE reports, MTRs, dimensional inspection, and hydrostatic test certificate.
Q: Do you offer engineering support or design feedback on my part drawings?
A: Yes, and we encourage it. Our in-house engineering team reviews every drawing before production and provides DFM (Design for Manufacturability) feedback at no cost:
We check for:
• Machinability: features that are difficult or impossible to produce (e.g., sharp internal corners, unreachable undercuts, extreme aspect ratios)
• Tolerance optimization: identifying dimensions where looser tolerances can reduce cost without affecting function
• Material alternatives: suggesting equivalent grades if the specified material has long lead times or is cost-prohibitive
• Cost reduction opportunities: changes that simplify fixturing, reduce setups, or allow more efficient tooling
This is a value-added service at no extra charge — many customers have reduced per-part cost by 15–30% through DFM suggestions while maintaining full functionality.
We never modify your drawing without your written approval. All DFM suggestions are clearly annotated on a marked-up drawing for your review.
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Note: If you do not find a Precision CNC Machined Carbon Steel Hydraulic Manifold that meets your requirements or is suitable for your customer’s project, please contact our manager sales consultant (Email: stsalesman4@stmetal001.com) and send us your specifications and technical parameter files to obtain Customized quotation plan. |
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