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Metal Fabrication FAQ — Answered by Balford's Engineers

Straight answers on deep drawing, metal stamping, CNC machining, solenoid valve housings, materials, tolerances, IMDS and RFQ lead times — written from Balford's factory floor in Zhuji, Zhejiang, China (ISO 9001:2015, 12,000 m², 500+ machines).

Company & SourcingDeep DrawingSolenoid Valve HousingsStamping, Machining & BrazingMaterials & ComplianceRFQ & Logistics

Company & Sourcing

Is Balford a factory or a trading company?

Balford is the factory brand of Zhejiang Balford Mechatronics Co., Ltd. in Zhuji, Zhejiang, China — a 12,000 m² plant with more than 500 machines for deep drawing, stamping, CNC machining, brazing and tube forming. See the factory profile.

Where is Balford located?

Balford operates at 2#, Guangfa Road, Yaojiang, Zhuji, Shaoxing, Zhejiang Province, 311800, China, about 150 km from the Ningbo and Shanghai export ports.

What scale of orders can Balford handle?

From small batches to large-scale production. Capacity covers prototype runs through steady OEM volumes; discuss quantities and scheduling with the sales team for specifics.

Does Balford provide samples?

Yes. Sample production is available so customers can confirm quality and specifications before mass production; samples typically ship in 7–30 days depending on process and tooling.

What is Balford's minimum order quantity?

MOQ depends on the product, material and process. We aim to meet customer needs while keeping production efficient — share your drawing and annual volume for a concrete answer.

Can Balford produce from customer drawings?

Yes. Parts are produced from customer drawings or specifications, and the engineering team offers design-for-manufacturing suggestions before tooling.

What is Balford's quality control process?

Raw material inspection, production process control, risk analysis and finished-product testing. The system follows ISO 9001:2015 with IATF 16949-aligned controls, FAI and PPAP-aligned documentation.

How does Balford protect customer IP?

Drawings and technical information are treated as confidential. Balford signs confidentiality agreements and strictly controls the use and storage of submitted files.

Which industries does Balford serve?

Automotive, appliance, industrial equipment, refrigeration, robotics and UAV programs, plus electronics. Medical and aerospace work is reviewed project by project - we have run a small number of such programmes, mainly solenoid valve housings, and we hold no medical or aerospace certification.

What payment terms does Balford accept?

Foreign trade exports are processed through Zhejiang Provincial International Trade Group Logistics Co., Ltd. as agent; see the payment and responsibility page for details.

What certifications does Balford hold?

ISO 9001:2015 Quality Management Environmental Management certification, with IATF 16949-aligned practices; see quality and certifications.

Does Balford provide design services?

Yes — stamping die design, machining fixture design, brazing solution design and pipe manufacturing solution design are offered as part of project support.

Deep Drawing

What is deep drawing?

Deep drawing forms a flat metal blank into a hollow part by forcing it through a die with a punch. Balford uses it for housings, shells, sleeves and tubes where a seamless, strong body is required. Deep draw capability.

What are Balford's strengths in deep drawing?

Forced-thinning deep drawing, in-die tapping, rotary cutting and side punching in continuous tooling — plus thin-wall and multi-stage drawing down to 0.35 mm walls on aluminum.

Which materials can Balford deep draw?

Steel and stainless steel (304, 316L), DC01/DC04 cold-rolled steel, aluminum (5052 and drawable grades), copper, brass, and magnetic materials such as DT4E pure iron.

What tolerances can Balford hold on deep drawn parts?

Formed diameters are typically held to tight commercial tolerances with FAI verification on every first article; final tolerances depend on material, wall reduction ratio and tooling class — our engineers confirm on your drawing before quoting.

How much does deep draw tooling cost and how long does it take?

Tooling is quoted per part after DFM review — typical tooling lead time is 15–30 days, with first production orders around 3–5 weeks.

Can Balford do thin-wall and multi-stage deep drawing?

Yes. Thin-wall parts are drawn through multiple stations — for example 0.8 mm 5052 blanks are deep drawn down to a 0.35 mm final wall thickness with thickness consistency controlled across the run.

Solenoid Valve Housings

What material is best for a solenoid valve housing?

For magnetic circuits, DT4E pure iron is commonly used; stainless steel (304/316L) suits corrosion-resistant or non-magnetic designs. Balford deep draws both — solenoid valve housing manufacturing.

Does Balford anneal solenoid housings after deep drawing?

Yes — heat treatment is applied per specification: hydrogen-removal annealing, vacuum annealing for coercivity control, and demagnetization annealing are used on solenoid components depending on the magnetic requirement.

What plating options are available for solenoid housings?

Zinc-nickel and zinc plating, nickel plating and bright finishes are coordinated in-house; salt-spray and appearance requirements are confirmed on the drawing.

Can Balford supply IMDS data and PPAP for solenoid housings?

Yes. IMDS data submission and PPAP-aligned documentation are supported for automotive part numbers — see the Balford IMDS process.

Stamping, Machining & Brazing

What metal fabrication services does Balford provide?

Metal stamping (progressive die and single-station), precision stamping and fine blanking, deep drawing, CNC machining, steel and copper tube bending, stainless steel brazing and pipe manufacturing, plus assembly and surface finishing.

Does Balford provide assembly services?

Yes — component machining and assembly of complete units are offered under one roof.

What post-processing and surface treatments does Balford offer?

Surface treatment, heat treatment and coating services including zinc, zinc-nickel, nickel plating, polishing, cleaning and annealing, customized to the part requirement.

What are Balford's strengths in stainless steel brazing?

Extensive stainless brazing experience with advanced techniques and equipment ensures high-quality joints for a wide range of stainless components.

Which customers use Balford machining services?

Balford provides joint machining (turning and grinding) services to Panasonic, American Standard and TOTO, among other OEM customers.

How complex can Balford's pipe fittings be?

Multi-bend and small-radius bend configurations are manufactured on automatic CNC pipe benders plus steel and stainless pipe processing equipment.

When should I choose stamping vs CNC machining vs deep drawing?

High volumes with tight tolerances favor progressive stamping; seamless hollow bodies favor deep drawing; low volumes or complex machined features favor CNC machining. Balford runs all three in one factory — compare capabilities.

Materials & Compliance

What materials does Balford use for production?

Common metals: stainless steel, carbon steel, aluminum alloy, copper and brass, plus DT4E pure iron for magnetic parts. Special material requests are assessed and procured on project basis.

Does Balford support RoHS, REACH and material compliance?

Compliance declarations are available for relevant programs and the company supports IMDS for automotive parts — see the compliance declarations on quality and certifications.

Does Balford handle rush orders?

Yes — every effort is made to accommodate urgent schedules; additional rush fees may apply depending on process and capacity.

RFQ & Logistics

How do I start working with Balford?

Start an RFQ on the Balford RFQ platform (rfq.balford.net), email shawn@balford.net, or call +86 135 8846 2222. Our team typically responds within 24 hours and walks you through drawings, DFM and quoting.

What is Balford's usual delivery time?

Small batch orders typically complete in 1–2 weeks; larger orders may take 4–6 weeks. By process: brazing and annealing 1–2 days, stamping 5–15 days, machining 7–15 days, steel pipe manufacturing 5–10 days.

How does Balford ship internationally?

Packaging plans are confirmed with the customer. FOB terms are standard from the nearby Ningbo and Shanghai ports (150 km) with dedicated trucking; DDU is offered for smaller quantities, with air and sea shipping as the primary modes.

What should I send for a fast and accurate RFQ?

A PDF, DXF, STEP or IGES drawing plus material grade, annual quantity, critical tolerances, surface treatment and destination country. See the contact page for the full checklist.

How fast is Balford's quote and DFM response?

Inquiries are typically answered within 24 hours (China Standard Time, UTC+8). A complete quote follows once drawings are received, and DFM feedback is issued after the engineering review of the drawing and material specification.

Didn't find your answer? Email the engineers or start an RFQ on rfq.balford.net — we usually respond within 24 hours.

Have a drawing you want quoted?

Send your part and get DFM feedback plus a production quote — usually within 24 hours.

Send Your Drawing for a DFM Review →

See also: Machinery & equipment list · Inspection lab & quality control

Detailed answers: what is deep drawing, design considerations, deep drawing vs progressive die stamping, tooling cost and lead time, housing tolerances and visual and cosmetic standards.