Looking for stainless steel compression tube fittings in the United States? Samvay supplies double ferrule instrumentation tube fittings in SS 316, duplex, super duplex and nickel alloys, certified to EN 10204 3.1.
From our machining base in Ahmedabad we supply instrumentation tube fittings to the United States, a market shaped by shale oil and gas and LNG export. US buyers order to ASME and ASTM standards, which are the base of our product design, so our fittings fit directly into US specs.
Instrumentation tube fittings use a front and back ferrule to grip and seal tubing without welding, giving a leak tight, vibration resistant joint that can be remade many times during maintenance. In the United States the typical service is sour gas, cryogenic LNG and high pressure hydraulic service, so grade selection and documentation matter as much as price. Every order ships with heat traceable material and a test record.
Instrumentation Tube Fittings for industries in the United States
Control and sampling tubing on skids and instrument panels.
Impulse lines from tapping points to transmitters and analysers.
Analyser and utility tubing in corrosive plant areas.
Condensate pot and sensing line connections.
Choosing the right grade in the United States
Service conditions in the United States usually mean sour gas, cryogenic LNG and high pressure hydraulic service. These are the grades we most often supply for that duty.
| Recommended grade | Why it suits the United States |
|---|---|
| Duplex 2205 or Inconel 625 to NACE MR0175 | Sour hydrocarbon service, where hardness control and sulphide stress cracking resistance are required |
| SS 316L with impact testing | Low temperature and cryogenic duty, with Charpy test results on request |
| SS 316 or carbon steel A105, heavy pattern | Vibration, dust and frequent remaking, where thicker bodies and hard seats last longer |
Instrumentation Tube Fittings specifications
| Types | Tube to Female, Instrument Pipe Fittings, Tube to Union, Accessories, Tube to Male |
|---|---|
| Equivalent To | DK-LOK, PARKER, SWAGELOK, HOKE |
| Standard | ASME SA-479, Type 304-SS, BS 970 304S11, DIN 4401, ASTM A276 Type 304 |
| Sizes | 1/8’’ to 2’’ and 3mm to 50mm |
| Ends | Threaded, Welding, JIC |
| Pressure Rating | 1000 Psi, 3000 Psi, 6000 Psi, 10000 Psi |
| Threads | NPT , BSPT, BSPP |
| Specification | Items Made from Hex, ASTM A276; Items made from Round Bar- ASTM A182 |
| HS CODE | 73072900 |
Instrumentation Tube Fittings we supply in the United States
Standards and documents for projects in the United States
- ASME B31.3
- NACE MR0175
- ASTM material specifications
- DFARS compliant material on request
- Positive material identification and hydrostatic test reports on request
- Packing lists, origin certificates and HS code 73072900 or 84818030 on every invoice
Delivery to the United States
We deliver by sea from Mundra or Nhava Sheva to Houston or New York in about 30 to 40 days, or by air. Our regular delivery points include:
- Houston
- Gulf Coast
- Permian Basin
- Louisiana
Frequently asked questions
Can Samvay supply instrumentation tube fittings to sites around Houston?
Yes. We ship by sea from Mundra or Nhava Sheva to Houston or New York in about 30 to 40 days, or by air. Regular consignments reach Houston, Gulf Coast, Permian Basin and Louisiana, and mixed orders of valves, fittings and accessories can be consolidated into one shipment with a single set of documents.
Which material grade do you recommend for projects in the United States?
For sour hydrocarbon service, where hardness control and sulphide stress cracking resistance are required, we usually recommend Duplex 2205 or Inconel 625 to NACE MR0175. Where conditions are milder, SS 316L with impact testing is a cost effective alternative. Share your process data and we will confirm the grade before quoting.
What certificates come with orders for the United States?
Orders for the United States are supplied to ASME B31.3, NACE MR0175, ASTM material specifications and DFARS compliant material on request. Every part is heat marked and traceable to its mill certificate, and third party inspection by the agency of your choice can be arranged before dispatch.
Are your tube fittings interchangeable with other double ferrule brands?
Our double ferrule design follows the established geometry used by the leading instrument fitting brands, and the fittings are available from 1/8 inch to 2 inch and 3 mm to 50 mm, rated up to 10000 psi depending on tube wall, with male, female, union, reducer and bulkhead configurations. For mixed brand installations on sites in the United States we still recommend using ferrules and nuts from one supplier on each joint.
How do I request a quote for the United States?
Email your item list with sizes, grade, quantity and delivery point to sales@samvayglobal.com or message us on WhatsApp at +91 77389 26862. We reply within one working day with price, lead time and shipping terms for the United States.