Industrial sourcing guide
Tube Fittings and Instrumentation Fittings RFQ Guide
Tube fittings and instrumentation fittings are selected around tube size, thread standard, pressure rating, material and leak-tight performance. Clear RFQ details help avoid mismatch between site tubing and supplied fittings.
Core specification inputs
For tube fittings, the buyer should define tube outside diameter, thread type, pressure rating, material, fitting style, quantity and whether the fitting is for new installation, replacement or maintenance stock.
- Tube OD and wall thickness
- Thread standard such as NPT, BSP or metric
- Connector, union, elbow, tee, bulkhead or adapter style
- Material grade and seal requirement
- Quantity by size and fitting type
Applications
Instrumentation fittings are used in impulse lines, analyzer connections, air distribution panels, hydraulic systems, sampling lines and compact process tubing around gauges and transmitters.
How to reduce clarification cycles
Send a fitting list with size, connection, material and quantity in one table. Photos of existing fittings can help identify replacement requirements, but technical dimensions are still important.
Frequently asked questions
What is the most important dimension for tube fittings?
Tube outside diameter and wall thickness are key because compression fittings must match the actual tubing used at site.
Can SNG Services support mixed fitting lists?
Yes. Buyers can send mixed fitting lists with connectors, unions, elbows, tees, adapters and accessories for technical and commercial review.