Quotation planning

A356 aluminum pump housing RFQ guide for leak-test, CNC machining, and PPAP-ready quote packages

Use this RFQ page when an A356 or A356-T6 pump housing quote depends on pressure or leak-test criteria, CNC datums, sealing faces, tooling status, and inspection documentation.

Send the controlled drawing and project requirements so procurement, SQE, and engineering teams can compare the proposed manufacturing and inspection scope.

Send RFQ / get quote Back to quote hub

What procurement wants clarified

Commercial checkpoints before the buyer sends the RFQ

• For an A356 pump housing or cast-plus-machined pump casing, identify the pressure boundary and required delivery condition in your RFQ.

• A356-T6 pump housing quotes should separate casting route, heat treatment, CNC machining, leak-test scope, and inspection records.

• Pressure or leak-test requirements should be stated as method, medium, pressure, hold time, acceptance criteria, and sampling plan.

• CNC cost depends on datums, ports, bores, sealing faces, O-ring grooves, threads, surface finish, and fixture assumptions.

• PPAP, FAI, CMM, material certificate, X-ray, and traceability needs should be declared before tooling and samples are quoted.

RFQ action

Prepare your quotation request

Include your drawing or specification, material, quantity or MOQ target, tooling status, required lead time, testing needs, and contact details.

Open contact / RFQ →

CNC machining workshop at Bohua Casting in Ningbo

Factory evidence

Evidence buyers can verify before releasing a A356 aluminum pump housing RFQ guide for leak-test, CNC machining, and PPAP-ready quote packages order

Ningbo Bohua Mechanical Parts Co., Ltd. operates an NQA-certified IATF 16949 quality system. The current certificate covers manufacturing of aluminum alloy cast parts and is valid through 2027-11-20.

Capability does not mean every inspection method is automatically included. The drawing, CTQs, sampling level, records, and acceptance criteria must be agreed in the RFQ and control plan.

Drawing to evidence

Define the record before comparing supplier quotes

Checkpoint	Bohua capability evidence	Buyer must define
Material identity	Oxford OES and project material certificates	Alloy designation, temper, governing standard, and certificate format
Internal soundness	Unicomp UNC-160 and Y.MU2000-D X-ray capability	Critical zones, inspection frequency, and acceptance reference
Dimensional approval	Hexagon Global S and NANO Metrology CMM capability	Datums, CTQs, sampling plan, and report layout
Pressure tightness	Dedicated pressure-tightness testing workshop	Medium, pressure, hold time, allowable leakage, and test stage
Submission package	PPAP documentation can be provided up to Level 5 according to project requirements. Heat/serial traceability.	PPAP level, FAI scope, retention period, and change-control requirements

Verify certification →Review inspection capability →Open capability sheet →Prepare drawing requirements →Send the RFQ package →

Buyer checklist

What to include so the quote is real

• 2D PDF drawing with revision status, marked critical dimensions, and sealing or pressure-related features

• STEP or IGES model if available, especially for ports, internal passages, ribs, bosses, and machining allowances

• A356-T6 target or accepted equivalent alloy and temper notes

• Leak-test medium, pressure, hold time, acceptance criteria, sampling plan, and record format

• CNC machining scope: datums, bores, threads, O-ring grooves, gasket faces, flatness, perpendicularity, and surface finish

• Tooling status: new tool, current supplier tool transfer, correction tool, or prototype-to-production plan

• Annual volume, pilot quantity, MOQ target, destination country, Incoterm, packaging, and launch timing

• Inspection package: CMM, material certificate, X-ray or CT expectation, FAI, PPAP, control plan, or traceability requirement

Commercial comparison

Questions that separate a serious quote from a placeholder quote

Leak-test definition	A serious RFQ states method, medium, pressure, hold time, pass/fail criteria, and whether testing is sample-based or lot-based.
Casting route	A356-T6 pump housings often need casting-route review before price comparison because wall thickness, feed path, machining exposure, and heat treatment change risk.
CNC scope	Quote accuracy improves when buyers mark datums, bearing or port bores, gasket faces, O-ring grooves, threads, and surface-finish expectations.
Tooling risk	New-tool and transfer-tool RFQs should separate mold condition, sample correction loop, machining fixture status, and approval records.
Documentation	PPAP, FAI, CMM, material certificates, leak-test records, and traceability should be quoted as part of the supply scope instead of added after samples.
Best next action	If drawings are ready, submit the formal RFQ with PDF + STEP, leak-test acceptance, CNC datum notes, CMM or PPAP needs, annual volume, and destination.

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