01
Melt and forge the blank
42CrMo, alloy structural steel or tool steel is chosen for the duty; the blank is produced to the agreed specification, not to a generic stock grade.
Anhui: the steel and materials belt behind a mill guide
A mill guide is a small part of a long chain: billet, rolling, guide, finished bar. Anhui keeps the steel mills, casting and forging, heat treatment and precision machining within a few hours of each other.
SteelMa’anshan & Tongling
Iron and steel, non-ferrous and the Yangtze river ports.
ProcessingCasting, forging, heat treatment
Partner shops working to our drawings and process requirements.
MachiningHefei
CNC turning, milling, grinding and metrology in our own workshops.
THE BELT
One province, one short chain
A mill guide is a small part of a long chain: billet, rolling, guide, finished bar. Anhui keeps the mills, non-ferrous plants, casting and forging shops, heat-treatment lines and precision machining within a few hours of each other. That geography is part of the product: shorter lead times, faster drawing iterations and a material certificate that is easy to trace.
Steel and rolling
Bar, wire rod and section mills in Ma’anshan, Tongling and the Yangtze corridor — the customers and the material base for guide design.
Castings and forgings
Blanks produced to the material specification agreed for the part, with the process route fixed before the first cut.
Heat treatment
Hardening and tempering to the duty of the guide, with hardness verified on the wear face.
FROM BILLET TO GUIDE
The route a guide takes
Approved drawing → material selection → casting or forging → CNC machining → heat treatment → inspection → packing. Every step has an owner and a record.
02
Machine to the drawing
CNC turning, milling and grinding, with critical fits held to ±0.02 mm and checked before the next operation.
03
Heat treat and inspect
Hardening and tempering to the process requirement; hardness, dimensions and material certificates recorded for the shipment.
WHY IT MATTERS
What a short chain buys you
Lead time
A drawing revision does not wait for a cross-country shipment; machining and heat treatment are coordinated in one place.
Traceability
Material certificates and inspection records stay on file with the drawing, order after order.
Repeatability
The second order fits like the first: same material, same hardness, same critical fits.
One responsibility
Senno owns the drawing, the process route and the delivered part — not just one step of it.
Send a drawing
An engineer will reply with a quotation, a material suggestion and a realistic lead time.