Sheet Metal Stamping Services

ISO 9001:2015 Certified | Progressive Die | Compound Die | Deep Drawing | Up to 600 SPM | In-House Die Design & Maintenance

Qingdao Inside Industry provides precision metal stamping services from our ISO 9001:2015 certified factory in Qingdao, China. Our stamping capabilities cover progressive die, compound die, stage die, and deep drawing operations on presses from 15T to 400T — producing everything from miniature electronic connector terminals at 400-600 SPM to heavy automotive structural brackets on our high-tonnage hydraulic presses.

All stamping tooling is designed and manufactured in-house by our die engineering team, with full lifetime die maintenance included on production tooling — no re-tooling cost for our production customers across the service life of the program.

ISO 9001:2015 Certified
Progressive, Compound & Stage Die Capability
15T to 400T Press Range
Up to 600 SPM High-Speed Stamping
In-House Die Design & Manufacture
Free Die Maintenance for Production Life

Core Service Scope

High-Speed Custom Metal Stamping Services

We utilize specialized, high-precision presses operating at high strokes per minute (SPM) for ultra-high-volume production. Our high-speed custom metal stamping services are ideal for small, intricate components like electronic connectors, lead frames, and terminal pins. This process ensures maximum throughput and cost-efficiency for large-scale OEM contracts.

Precision Progressive Die Metal Stamping

As a leading manufacturer, our progressive die custom metal stamping services feature a highly automated process where a material strip passes through multiple stations in a single press. This is the foundation of our contract manufacturing capability, perfect for complex parts requiring high-volume, long-term production runs with maximum efficiency and minimal material waste.

Deep Drawing & Custom Metal Stamping Services

We specialize in forming sheet metal into seamless, hollow components where the part depth exceeds its diameter. Our deep drawing custom metal stamping services are essential for manufacturing high-quality industrial enclosures, automotive oil pans, stainless steel shells, and cylindrical housings for the medical and energy sectors.

Fine Blanking for Heavy-Duty Custom Metal Stamping Services

For parts requiring smooth, straight edges and extremely close tolerances, our fine blanking process delivers superior flatness and dimensional accuracy. We integrate coining into our custom metal stamping services to create detailed surface features or high-strength structural parts, eliminating the need for costly secondary CNC machining operations.

Stamping Die Types -- Selecting the Right Tool for Your Part

Die type selection determines the cost-per-part, minimum run size, and achievable part complexity for any stamping project. We manufacture all four major die types in-house and recommend the appropriate type during the DFM review stage based on your part geometry, required volume, and tolerance requirements.

Die Type	How It Works	Best Application	Production Volume	Dimensional Tolerance
Progressive Die	Part advances through multiple stations in one die set. Each press stroke: blank, pierce, form, cut-off completed sequentially. Fully automated strip feed.	Electronic terminals, connector pins, lead frames, medical clips, spring contacts, washer assemblies	100,000 to 50,000,000+ pieces per run. Lowest per-part cost at volume.	+-0.05mm on blanked features; +-0.1mm on formed features (material dependent)
Compound Die	Blanking and piercing completed simultaneously in a single stroke. Tightest concentricity between OD and ID features.	Precision washers, gaskets, flat blanks requiring simultaneous OD and ID accuracy	5,000 to 500,000 pieces. Higher per-stroke cost than progressive, better concentricity.	+-0.03mm OD/ID concentricity achievable
Stage/Transfer Die	Parts transfer between individual die stations via robot or manual handling. Each station performs one operation.	Deep drawn housings, complex brackets, automotive structural parts with multiple bend and draw features	5,000 to 500,000 pieces. Maximum geometric complexity per press stroke.	+-0.1mm to +-0.2mm on formed dimensions
Single-Operation Die	One operation per stroke: blank only, pierce only, or form only. Simple tooling, fast to produce.	Prototype quantities before progressive die investment; simple flat blanks; R&D validation	1 to 10,000 pieces. Highest per-part cost but lowest tooling cost and fastest tooling lead time.	+-0.1mm standard

Our Stamping Processes -- Technical Overview

Our high-speed presses operating at 200-600 SPM are configured for long-run progressive die production of small, high-precision components. Servo-controlled strip feeds maintain +-0.01mm pitch accuracy across the full die length — critical for terminal pin and connector applications where cumulative station error would cause out-of-position features.

High-speed progressive stamping is the lowest-cost per-piece method for volumes above 100,000 units. At 400 SPM, a single shift produces approximately 240,000 pieces — making it the standard process for electronic connector terminals, spring contacts, and medical clip components.

Precision Blanking & Piercing

Blanking and piercing define the perimeter geometry and internal features of stamped parts. Our toolroom maintains a dimensional library of standard punch and die sets, allowing us to begin prototype production on many standard feature sizes within days of drawing receipt — rather than waiting for custom tooling manufacture.

For fine blanking requirements (smooth, square shear faces with no roll-over or break angle), we offer external fine blanking partnerships with certified fine blanking presses — appropriate for hydraulic valve discs, locking ratchet plates, and precision lock components.

High-Speed Progressive Stamping

Deep Drawing Services

Deep drawing forms flat sheet metal into cylindrical, rectangular, or custom-profile hollow shapes by pressing a blank through a die with a punch. The ratio of the drawn part height to its diameter (draw ratio) determines how many press stages are required. Our standard draw ratio capability is up to 3:1 in a single draw; greater depths require re-drawing operations.

We deep draw stainless steel 304/316L, aluminum 1050/3003/5052, copper C11000, and mild steel CR1008. Drawn parts are produced on hydraulic and servo presses from 100T to 300T. Typical applications: battery cell cans (aluminum), medical syringe body housings (SS 316L), electrical motor end caps, and filter housings.

Complex Tooling: Bending, Embossing & Coining

Progressive and stage dies can incorporate secondary form features including bends, ribs, embossments, threads, and coined surfaces in the same die set — completing the full part geometry in a single press pass without secondary operations. Our toolroom designs and manufactures these compound tools in-house using CAD/CAM programming with dimensional simulation before cutting.

Coined features achieve the tightest dimensional tolerances in stamping — by flowing material plastically into the die cavity, coining can produce flat surfaces to +-0.01mm and stamped contacts to exacting force requirements measured in grams per millimeter of deflection.

Our Competitive Advantages and Commitment in Custom Metal Stamping Services

As a specialized mechanical processing company with 10+ years of export experience, Qingdao Inside Industry Co., Ltd. excels in delivering precision sheet metal stamping and fabrication.
We focus on translating high-efficiency production and engineering precision into a sustainable cost advantage for our global partners.

Custom Metal Stamping Services: High Precision and Consistency

In-house Die Design: Our custom-designed stamping dies ensure the highest dimensional accuracy and repeatability for every machined part.
OEM Excellence: We are the preferred partner for OEM custom metal stamping services projects that demand strict tolerance control and superior surface finishes for industrial applications.
Flexible Capacity (15T – 400T Press Range): Equipped with a diverse fleet of stamping machines ranging from 15 to 400 tons, we offer unparalleled scalability for both small-batch trials and large-scale industrial fabrication.
Rapid Response: Our standard custom stamped parts typically feature a lead time of 3 to 7 days for urgent samples, ensuring your assembly lines remain uninterrupted.

Supply Chain and Geographical Optimization for Global Buyers

Service Network Optimization: We offer flexible logistics to support your custom metal stamping services globally, addressing the need for “reliable stamping partners” through excellent remote project management.
Advanced Supply Chain Support: We provide modern support such as JIT (Just-in-Time) services and Kan Ban services to optimize your production lines and minimize inventory costs.
Logistics Efficiency: Our facility provides barcoding and labeling services for efficient material management and tracking during the export process.
Cost-Effectiveness: While the initial investment in stamping presses is higher, the long service life of our molds ensures affordable mass production of precision components.

Stamping Applications by Industry

Industry	Typical Stamped Parts	Materials	Key Requirements
Automotive & EV	Body reinforcements, seatbelt anchors, door hinges, stamped contacts, battery terminal plates	CR1008, HSLA DP590, Cu C11000, SS 301	IATF 16949 alignment; PPAP; high-volume progressive die; crash performance
Electronics & Comms	Terminal pins, lead frames, EMI shielding cans, RF connectors, spring contacts	Copper C17200, SS 301, SS 304, BeCu	High-speed progressive (400-600 SPM); tight feature tolerance +-0.05mm; plating compatible
Medical Devices	Surgical clip components, implant clips, diagnostic device contacts, instrument springs	SS 316L, SS 301, Ti Grade 2	Biocompatible material; full MTR traceability; clean-room packaging on request
Industrial Equipment	Motor laminations, relay contacts, precision washers, mounting brackets, heat sink fins	CR1008, SS 304, Al 1050	Volume consistency; tight blanking tolerance; automated strip feed
Consumer Products	Appliance brackets, decorative hardware, furniture clips, door hardware	CR1008, Galvanized, Brass	Cosmetic surface; zinc or nickel plating; aesthetic burr-free edges
Energy & Renewables	Solar mounting clips, battery cell cans, busbar blanks, relay contacts	Al 3003/1050, Cu C11000, SS 304	Corrosion resistance; conductivity; volume production

Stamping Materials & Thickness Specifications

We work with high-quality industrial materials according to global standards like SAE International to ensure the durability of our custom metal stamping services.

Material	Common Grades	Thickness Range	Key Stamping Characteristics	Typical Applications
Stainless Steel	304, 316L, 301, 201	0.1mm — 3.0mm	High spring-back; work-hardens during forming; requires lubrication and polished tooling	Medical clips, food equipment contacts, architectural components, marine hardware
Aluminum	1050, 3003, 5052-H32, 6061-T4	0.3mm — 6.0mm	Excellent formability (5052/3003); lower spring-back than steel; anodizable finish	EV battery cans, electronic enclosures, heat shields, aerospace blanks
Mild Steel (CR)	CR1008, SPCC, DC01, Q235	0.3mm — 10mm	Best formability and lowest spring-back; most cost-effective for high volume	Automotive bodies, appliance shells, general structural brackets
High-Strength Steel	HSLA, DP590, DP780, S420	0.5mm — 4.0mm	High spring-back; requires higher press tonnage; specialist tooling clearances	Automotive structural reinforcements, seatbelt anchors, crash components
Galvanized Steel	DX51D+Z, S250GD	0.3mm — 3.0mm	Zinc coating; requires adjusted die clearance to avoid zinc flaking	Outdoor enclosures, HVAC components, structural brackets
Copper	C11000 ETP, C17200 BeCu	0.1mm — 3.0mm	Superior conductivity; excellent formability; high material cost	Electrical bus bars, relay contacts, battery terminals, RF shielding
Brass	C26000, C36000	0.1mm — 3.0mm	Good machinability and formability; attractive finish	Decorative hardware, valve components, precision connectors
Spring Steel	65Mn, SK5, 1074	0.1mm — 1.5mm	Very high spring-back; high hardness; specialist progressive tooling required	Spring clips, leaf springs, retaining rings, precision snap elements

Frequently Asked Questions -- Metal Stamping Services

What types of value-added services do you offer with stamping?

Beyond the pressing operation itself, we offer a comprehensive range of value-added services to deliver assembly-ready parts: surface treatment (zinc plating, nickel plating, tin plating, passivation, anodizing, powder coating), tumble deburring for burr-free edges, tape-and-reel packaging for automated insertion, custom labeling and barcoding per your WMS specification, sub-assembly (pressing in standoffs, riveting, spot welding), and supply chain programs including JIT delivery, Kanban replenishment, and consignment inventory. For precision contact and terminal programs, we coordinate tin or silver plating with our certified plating partners before tape-and-reel packaging. For automotive programs, we provide PPAP documentation, material traceability, and statistical process control (SPC) reports. The goal is to ship parts that go directly to your assembly line without receiving inspection or additional processing.

How do you ensure the quality and precision of stamped parts?

Quality is controlled at four stages. Incoming material inspection confirms strip thickness, hardness, and MTR compliance before the die is loaded. Die tryout inspection measures all features against the drawing before production release — we do not begin a production run until the first-article parts pass all dimensional checks. In-process inspection samples the strip every 500-2000 strokes depending on the QC plan — checking feature positions, burr height, and die condition. Final inspection applies AQL sampling to the finished lot. For critical dimensions, we use CMM measurement or optical comparator systems. We provide FAI reports as standard and offer 100% automated vision inspection for high-volume programs where zero-defect delivery is contractually required. All dies are maintained to original dimensional specifications between production runs, and we document die condition in a run log.

What are your CNC press and servo press capabilities?

Our stamping presses include servo-electric, mechanical crank, and hydraulic press types across the 15T-400T range. Servo presses are used for applications requiring variable slide motion profiles — such as deep drawing stages where slower approach speed reduces material thinning — and for high-precision progressive work requiring consistent stroke-to-stroke repeatability. Mechanical presses run at the highest SPM rates (up to 600 SPM on our high-speed progressive lines) and are standard for electronic terminal and contact production. Hydraulic presses provide the longest dwell time at bottom of stroke — preferred for coining, embossing, and deep drawing. The term ‘CNC stamping’ in our context refers to CNC-controlled servo-drive presses and CNC-controlled die cushions, not CNC milling; stamping is a different manufacturing discipline from CNC machining.

How can I get a quote and start cooperation?

Send your drawings to info@insidemetalfab.com or upload via our quote request form. For stamping projects, we need: a 2D drawing in PDF or DXF with all dimensions and tolerances; material specification including grade and thickness; target annual or monthly volume; required surface finish and packaging; and any compliance requirements (RoHS, REACH, PPAP level). We return a quotation with DFM feedback and a tooling cost estimate within 24-48 hours. For new programs, the standard process is: DFM review and quotation, tooling order and payment, die manufacture (4-6 weeks for progressive dies), die tryout and first-article approval, and production release. Repeat orders after first-article approval are typically shipped within 2-3 weeks. We can begin tooling manufacture after a 50% deposit.