Technical Documentation Center
Sumpro's technical documentation system is built on five standards frameworks — GB, ASTM, EN, JIS and ISO. It covers the material grades, technical parameters and process standards of the special-alloy castings we produce, so that design and sourcing teams can specify and verify parts against a recognised standard.
Documentation by Material Family
Stainless Steel Castings
Austenitic, duplex and martensitic stainless steel casting grades.
Standards: GB/T 2100 · ASTM A351 · EN 10283 · JIS G5121
Typical grades: 304 / CF8, 316 / CF8M, 304L / CF3, 316L / CF3M, 904L, Alloy 20, 2205 duplex, 2507 super duplex.
Heat-Resistant Cast Steel
Cr-Ni heat-resistant steel casting grades for high-temperature service.
Standards: GB/T 8492 · ASTM A297 · EN 10340
Typical grades: 253MA, HK40 / 2520, HP-Nb / 2635.
Nickel-Based Alloy Castings
Corrosion-resistant and high-temperature nickel-based casting grades.
Standards: ASTM A494 · EN 10295 · JIS H5702
Typical grades: Inconel 625, Inconel 718, Hastelloy C276, Monel 400.
Titanium & Titanium Alloy Castings
Commercially pure titanium and Ti-6Al-4V casting grades.
Standards: GB/T 6614 · ASTM B367 · EN 2953
Typical grades: Titanium Grade 2, Titanium Grade 5 (Ti-6Al-4V).
Casting Inspection Standards
UT / MT / PT / RT non-destructive testing general standards.
Standards: GB/T 7233 · ASTM A802 · ISO 4990
See the quality control and testing system for the inspection flow.
Grade Cross-Reference
GB ↔ ASTM ↔ EN ↔ JIS grade equivalency lookup.
Quickly find the equivalent grade across different standards frameworks.
Cross-reference tables and per-grade datasheets are provided on request.
Material Coverage at a Glance
| Family | Typical grades |
|---|---|
| Stainless steel castings | 304 / CF8, 316 / CF8M, 304L / CF3, 316L / CF3M |
| Super-austenitic & special stainless | 904L, Alloy 20 |
| Duplex stainless steel | 2205 duplex, 2507 super duplex |
| Heat-resistant cast steel | 253MA, HK40 / 2520, HP-Nb / 2635 |
| Nickel-based alloys | Inconel 625, Inconel 718, Hastelloy C276, Monel 400 |
| Titanium alloys | Titanium Grade 2, Titanium Grade 5 (Ti-6Al-4V) |
Process routes and achievable tolerance scope are summarised on the technical capability page.
In-House Process Chain
Documentation is tied to the process chain we run ourselves: blank → heat treatment → machining → welding → inspection → surface treatment. Each stage has its own work instruction and record set, and inspection records are bound to heat and batch numbers for full traceability.
Related pages: production process · equipment list · quality control · certifications.
Documentation Available on Request
- Material Test Report (MTR) with chemical composition and mechanical properties
- Dimensional inspection report (per drawing tolerances)
- Non-destructive testing reports (UT / MT / PT / RT as applicable)
- Heat-treatment records and batch traceability package
- Quality certificates issued with the shipped batch
Applicable material grades, testing scope and acceptance criteria are agreed per order according to the relevant standard or technical agreement.
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