We build the equipment
We have designed and built heat-treatment furnaces ourselves. Knowing the equipment lets us control the process closely.
SEMICONDUCTOR PIPE
Semiconductor Pipe
Bright Annealing of Stainless Steel Pipe
We heat-treat stainless steel pipe used in semiconductor and high-purity piping to a bright, scale-free surface.
BRIGHT ANNEALING
What is bright annealing (BA)?
Bright annealing heats and cools stainless steel in a protective gas atmosphere, such as a hydrogen-nitrogen mixture. Unlike heat treatment in air, the surface does not oxidize, so a bright surface is obtained without acid pickling, and the stresses introduced by forming and welding are relieved.
SURFACE
Why surface condition matters
Oxide scale and contamination on pipe surfaces affect later cleaning and polishing steps and cleanliness in service. Producing a stable surface condition at the heat-treatment stage is where it starts.
STRENGTHS
Why Shimdo Tech
Our own process gas
Ammonia dissociators produce the hydrogen-nitrogen protective gas in-house.
Conditions set per order
We set processing conditions for the material and size, and monitor the equipment during the run.
PROCESS
Process
- 1
Inquiry and specification
We confirm material, outside diameter, wall thickness, length, quantity and required surface condition.
- 2
Incoming check
We check the material certificate, dimensions and visual condition.
- 3
Bright annealing
Heat treatment in a protective-atmosphere continuous furnace.
- 4
Pre-shipment check
Visual and dimensional inspection.
- 5
Packing and shipment
Packed to protect the surface, then shipped.
SCOPE
Scope
We process stainless steel pipe and tube. Material, size, length and quantity are reviewed for each order and the conditions agreed. Sample processing is available on request.
FAQ
Frequently asked questions
What pipe sizes can you process?
Feasibility and conditions depend on outside diameter, wall thickness, length and material. Send us the specification and we will reply after review.
Can you process samples?
This is agreed case by case depending on the specification.
What information do you need for a quote?
Material, outside diameter, wall thickness, length, quantity, required surface condition, desired delivery date and application.
Can I inquire from overseas?
Yes, you can write to us in English. Shipping terms are agreed individually.
Send us your specification and quantity.
We will reply after a technical review.
- Tel (Korea) 1544-1072
- Fax +82-31-997-5072
- Email shimdo@shimdo.com