Stainless Steel 347 / 347H Instrumentation Fittings Manufacturer

Global Steel is an established and prominent supplier of Stainless Steel 347/347H Instrumentation Fittings. All our products are manufactured in line with international standards. All products are made using premium quality raw materials and using the latest technology. Stainless Steel 347/347H Instrumentation Fittings can be customized according to size, dimension and surface finish, as per the customer’s needs.

Stainless Steel 347/347H Instrumentation Fittings are made of an austenitic stainless steel which has excellent corrosion and oxidation resistance. It has better corrosion-resistant properties that Stainless Steel 321 Instrumentation Fittings. After exposure to temperatures in the chromium carbide precipitation range of 800 – 1500°F (427 – 816°C), it possesses exceptional resistance to intergranular corrosion. To 1500°F (816°C), the alloy exhibits good oxidation resistance and creep strength. It displays strength even in low temperatures.
Stainless Steel 347H instrumentation fittings have a higher carbon content as compared to Stainless Steel 347 Instrumentation Fittings. These fittings are suitable for applications requiring enhanced creep resistance and for higher strength at temperatures above 1000°F (537°C).

At moderate temperatures, Stainless Steel 347/347H Instrumentation Fittings can be utilised in nitric solutions, most diluted organic acids, pure phosphoric acid at lower temperatures, and up to 10% diluted solutions at elevated temperatures. In hydrocarbon service, Stainless Steel 347/347H Instrumentation Fittings resist polythionic acid stress corrosion cracking. At mild temperatures, it can also be used in chloride or fluoride-free caustic solutions. Stainless Steel 347/347H Instrumentation Fittings do not perform well in sulphuric acid and chloride solutions.

Specification of SS 347, 347H Instrumentation Fittings

Imperial Size 1/2″ to 2″
Size 1/16”OD to 2”OD, 2mm OD to 50mm OD
Thread NPT, BSP, BSPT, UNF, ISO, SAE, MS, AN, weld ends etc.
Pressure Rating 6000PSI for Stainless Steel, 300/1000/3000PSI for Brass
Temperature Ratings Up to 1000°F (537°C)
Types Tube to Union, Tube to Male, Tube to Female, Instrument Pipe Fittings, Accessories
Application Power/ gas/ petroleum/ chemical/ metallurgy/ shipbuilding etc.
Our service
  • Nace Mr 01 75
  • Sour Service
  • Impact Test As Per Ug 84
  • Macro Structure Analysis
  • Hydrogen Induce Cracking Test (Hic)
  • Sulphide Stress Cracking Test (Sscc)
  • Cryogenic Services (Cryo),hydrogen Services (H2)
  • Helieum Leak Test
  • Dye Peniterant Test (Dp)
  • Magnetic Partius Test (Mp)
  • Post Weld Heat Treatment (Pwht)
  • Ultrasonic Test (Ut)
  • Hydro Test, Etc.
Test Certificates
  • EN 10204/3.1B
  • Raw Materials Certificate
  • 100% Radiography Test Report
  • Third Party Inspection Report, etc
Production Technique Forged/ Heat treated and machined.
Stainless Steel 347 / 347H Instrumentation Fittings

Equivalent Grades

STANDARD WERKSTOFF NR. UNS JIS GOST EN
SS 347 1.4550 S34700 SUS 347 08Ch18N12B X6CrNiNb18-10
SS 347H 1.4961 S34709 SUS 347H X6CrNiNb18-12

Different Types

Instrumentation Union

SS 347, 347H Instrumentation Union

Instrumentation Elbow

SS 347, 347H Instrumentation Elbow

SS 304, 304L, 304H Pipe Clamp

SS 347, 347H Instrumentation Tee

Instrumentation Connector

SS 347, 347H Instrumentation Connector

Instrumentation Reducer

SS 347, 347H Instrumentation Reducer

Instrumentation Cross

SS 347, 347H Instrumentation Cross

Contact us to get a quick quote for your requirement.

We offer These Stainless Steel 347 / 347H Instrumentation Fittings as per DIN, ISO, JIS or ANSI Standard.

Available Stock

  • Grade 347 Stainless Steel Union Elbow-UE
  • Stainless Steel 347 BSPP Plugs
  • UNS S34709 Instrumentation Fittings
  • SS 347H Instrument Female Run Tee-FRT
  • SS 347H Bulk Head Union-BU
  • Stainless Steel 347 Male Stud Coupling Connector
  • INOX 347 Instrumentation Fittings
  • 347H SS Instrumentation Fittings
  • Stainless Steel 347 Female Elbow-FE
  • 347 SS Gauge Adaptor
  • Stainless Steel 1.4961 Male Elbow – ME
  • SS 347H Union Cross-UC
  • Stainless Steel 347 Male Branch Tee-MBT
  • Stainless Steel 347 Tube Socket Weld Union
  • UNS S34700 Stainless Steel Union-U
  • Type 347 SS Industrial Instrumentation Fittings
  • Stainless Steel 347H Instrumentation Fittings
  • SS 347H Male Run Tee-MRT
  • 347 Stainless Steel Female Connector-FC
  • 347 Stainless Steel Reducer Union-RU
  • SS 347H 45° Male Elbow – ME
  • Stainless Steel 347H Female Branch Tee-FBT
  • Stainless Steel S34700 Instrumentation Fittings
  • Stainless Steel 347H Instrumentation Tube Fittings
  • Stainless Steel 347H Instrumentation Tube Fittings
  • Stainless Steel 347 Bulk Head Male Connector
  • Austenitic Stainless Steel 347H Female Run Tee
  • 347 Stainless Steel Reducing Adaptor
  • Stainless Steel 347 Coupling Socket
  • Stainless Steel 347H Male Pipe Weld Connector-MPWC
  • SS 1.4961 Compression Tube Fittings
  • 347H SS Male Adapter-MA
  • SS 347H Instrumentation Reducer-R
  • 347 Stainless Steel Hex Long Nipple
  • SS 347 Front Ferrule-FF
  • Stainless Steel 347H Adaptor
  • Stainless Steel 347 Male Plug
  • Stainless Steel 347 Female Adapter-FA
  • Stainless Steel 347 Port Connector-PC
  • 347H SS Male Branch Tee
  • SS 347H Tube Socket Weld Elbow-TSWE
  • Stainless Steel 347 Female Elbow
  • SS 347H Female Connector
  • 347 Stainless Steel Male Pipe Weld Elbow-MPWE
  • SS 347H Instrumentation Tube Fittings
  • Stainless Steel 347 Hose Nipple BSP
  • Stainless Steel 347H Back Ferrule-BF
  • Stainless Steel 347H Bulk Head Reducer BR

Dimensions

METRIC RANGE Dimension in mm  
Part T P L1 M C D F G H N
N0 mmo/d   Length       Body Nut Body  
4mMC2 4 1/8′ 31.35 9.53 16.67 14.29 12 12 24.21 10.72
4mMC4 4 1/4′ 35.72 14.29 16.67 14.29 14 12 29.37 15.88
6mMC2 6 1/8′ 33.34 9.53 18.26 15.88 14 14 25.40 11.11
6mMC4 6 1/4′ 33.34 14.29 18.26 15.88 14 14 30.16 12.70
6mMC6 6 3/8′ 38.89 14.29 18.26 15.88 19 14 30.96 13.49
6mMG8 6 1/2′ 44.45 19.05 18.26 15.88 22 14 36.51 15.88
8mMC2 8 1/8′ 34.53 9.53 19.05 16.67 14 17 26.59 11.51
8mM04 8 1/4′ 39.29 14.29 19.05 16.67 14 17 31.35 13.10
10mM02 10 1/8′ 35.72 9.53 19.84 17.46 17 19 27.78 11.91
10mMC4 10 1/4′ 40.48 14.29 19.84 17.46 17 19 32.54 13.49
10mMC6 10 3/8′ 40.48 14.29 19.84 17.46 19 19 32.54 13.49
10mMC8 10 1/2′ 46.04 19.05 19.84 17.46 22 19 38.10 15.88
10mMC12 10 3/4′ 46.83 19.05 19.84 17.46 27 19 38.89 15.08
12mMC4 12 1/4′ 43.66 14.29 22.23 23.02 22 22 33.34 11.11
12mMC6 12 3/8′ 43.66 14.29 22.23 23.02 22 22 33.34 11.11
12mMC8 12 1/2′ 48.42 19.05 22.23 23.02 22 22 38.10 12.70
12mM012 12 3/4′ 49.21 19.05 22.23 23.02 27 22 38.89 11.91
16mMC6 16 3/8′ 44.45 14.29 22.23 24.61 24 27 34.13 10.32
16mMC8 16 1/2′ 49.21 19.05 22.23 24.61 24 27 38.89 11.91
16mMC12 16 3/4′ 49.21 19.05 22.23 24.61 27 27 38.89 10.32
18mMC8 18 1/2′ 50.80 19.05 22.23 24.61 27 30 40.48 13.49
18mMC12 18 3/4′ 50.80 19.05 22.23 24.61 27 30 40.48 10.32
18mMC16 18 1″ 56.36 23.81 22.23 24.61 36 30 46.40 14.29
20mMC8 20 1/2′ 50.80 19.05 22.23 24.60 27 30 40.48 13.49
20mM012 20 3/4′ 50.80 19.05 22.23 24.61 27 30 40.48 10.32
20mM016 20 1″ 56.36 23.81 22.23 14.61 36 30 46.04 14.39
25mMC12 25 3/4′ 57.15 19.05 26.19 30.96 36 41 45.24 11.91
25mMC16 25 1″ 61.91 23.81 26.19 30.96 36 41 50.01 13.49
METRIC RANGE Dimention in Inches  
Part T P L1 M C D F G H N
N0 mmo/d   Length       Body Nut Body  
1MC1 1/16 1/16 .94 .38 .44 .34 5/16 5/16 .78 .34
1MC2 1/16 1/8 1.00 .38 .44 .34 1/2 5/16 .84 .41
2MC1 1/8 1/16 1.19 .38 .63 .53 1/2 7/16 .91 .41
2MC2 1/8 1/8 1.19 .38 .63 .53 1/2 7/16 .91 .41
2MC4 1/8 1/4 1.41 .56 .63 .53 9/16 7/16 1.13 .50
3MC2 3/16 1/8 1.21 .38 .63 .54 7/16 1/2 .95 .43
3MC4 3/16 1/4 1.42 .38 .63 .54 9.16 1/2 1.16 .54
4MC1 1/4 1/16 1.29 .56 .70 .60 1/2 9/16 1.00 .46
4MC2 1/4 1/8 1.29 .56 .70 .60 1/2 9/16 1.00 .45
4MC4 1/4 1/4 1.50 .75 .72 .63 9/16 9/16 1.19 .50
4MC6 1/4 3/8 1.51 .38 .70 .60 11/16 9/16 1.19 .56
4MC8 1/4 1/2 1.73 .56 .70 .60 7/8 9/16 1.44 .67
5MC2 5/16 1/8 1.34 .38 .73 .64 9/16 5/8 1.05 .46
5MC4 5/16 1/4 1.52 .56 .73 .64 9/16 5/8 1.23 .54
6MC2 3/8 1/8 1.38 .56 .76 .66 5/8 11/16 1.09 .48
6MC4 3/8 1/4 1.57 .75 .76 .66 5/8 11/16 1.28 .57
6MC6 3/B 3/8 1.57 .75 .76 .66 11/16 11/16 1.28 .56
6MC8 3/B 1/2 1.79 .56 .76 .66 7/8 11/16 1.50 .67
6MC12 3/8 3/4 1.82 .56 .76 .66 1-1/16 11/16 1.53 .68
8MC4 1/2 1/4 1.17 .75 .86 .90 13/16 7/8 1.31 .47
8MC6 1/2 3/8 1.71 .75 .86 .90 13/16 7/8 1.31 .46
8MC8 1/2 1/2 1.90 .56 .86 .90 7/8 7/8 1.50 .54
8MC12 1/2 3/4 1.93 .75 .86 .90 1-1/16 7/8 1.53 .55
10MC6 5/8 3/8 1.74 .56 .86 .96 15/16 1 1.34 .43
10MC8 5/8 1/2 1.93 .75 .86 .96 15/16 1 1.53 .51
10MC12 5/B 3/4 1.93 .75 .86 .96 1-1/16 1 1.53 .49
12MC8 3/4 1/2 1.99 .75 .86 .96 1-1/16 1-1/8 1.59 .57
12MC12 3/4 3/4 1.99 .75 .86 .96 1-1/16 1-1/18 1.59 .55
12MC16 3/4 1 2.21 .94 .86 .96 1-3/16 1-1/8 1.81 .68
16MC12 1 3/4 2.26 .75 1.04 1.23 1-3/8 1-1/2 1.78 .55
16MC16 1 1 2.45 .94 1.04 1.23 1-3/8 1-1/2 1.97 .65

Chemical Structure

Grade C Mn Si P S Cr Cb Ni Fe
SS 347 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 20.00 10xC – 1.10 9.00 – 13.00 62.74 min
SS 347H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 – 19.00 8xC – 1.10 9.0 -13.0 63.72 min

Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1454 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

We Serve Application Industry

Application Industry

Instrumentation Fittings applications are as diverse as the industries they serve driven primarily by the aerospace, railway, construction and automotive industries with petrochemical, nuclear, medical, Oil & Gas, Chemical, Pharmaceutical, Food & Beverage, Nuclear, Thermal Power plants, Paper and Pulp, marine and mining, etc.

Oil & Gas Industry

Petrochemical Industry

Power Generation Industry

Chemical Industry

We Export Stainless Steel 347, 347H Instrumentation Fittings Across the Globe

Hong Kong, Netherlands, Mongolia, Austria, Turkey, Greece, Russia, Thailand, Kuwait, Yemen, Bahrain, South Africa, Bhutan, Tibet, Israel, Estonia, Saudi Arabia, Libya, Oman, Kazakhstan, Peru, Serbia, Mexico, Romania, Gabon, Mexico, Iraq, United States, Zimbabwe, Puerto Rico, Sweden, Namibia, Gambia, Finland, Vietnam, Singapore, New Zealand, Chile, Germany, Costa Rica, South Korea, Malaysia, Bulgaria, India, Iran, Japan, Ghana, Algeria, Macau, Tunisia, Lithuania, Ecuador, Venezuela, Lebanon, Spain, Nigeria, Bangladesh, Brazil, Sri Lanka, Angola, Belarus, Czech Republic, Poland, Ukraine, Norway, Azerbaijan, Canada, Iran, Australia, Nigeria, China, Chile, Belgium, Philippines, Indonesia, Switzerland, Hungary, Croatia, Trinidad & Tobago, United Kingdom, Afghanistan, Pakistan, Italy, Egypt, Kenya, Bolivia, Argentina, France, Denmark, Nepal, Morocco, Portugal, Jordan, United Arab Emirates, Ireland, Qatar, Colombia, Poland, Slovakia, Taiwan.

Domestic Supply Stainless Steel 347, 347H Instrumentation Fittings

Gimhae-si, Rio de Janeiro, Riyadh, Ahmedabad, Geoje-si, Dubai, Montreal, Mexico City, Haryana, Bangkok, Busan, Edmonton, La Victoria, Bengaluru, Perth, Noida, Vadodara, Nashik, Hyderabad, Lagos, Navi Mumbai, Istanbul, Melbourne, Gurgaon, Chandigarh, Jeddah, Aberdeen, Granada, Singapore, Calgary, Dallas, Pune, Vung Tau, Kanpur, Muscat, Thane, Baroda, Ranchi, Thiruvananthapuram, Ulsan, Madrid, Houston, London, Sharjah, Coimbatore, Abu Dhabi, Mumbai, Surat, Kuwait City, Caracas, Chiyoda, Jakarta, Hong Kong, Jamshedpur, Faridabad, Lahore, Courbevoie, Brisbane, Ernakulam, New Delhi, Pimpri-Chinchwad, Visakhapatnam, Algiers, Karachi, Ahvaz, Petaling Jaya, Moscow, Tehran, Chennai, Atyrau, Los Angeles, Bhopal, Indore, Al Jubail, Sydney, New York, Bogota, Port-of-Spain, Manama, Ankara, Kuala Lumpur, Colombo, Howrah, Nagpur, Kolkata, Seoul, Secunderabad, Dammam, Al Khobar, Hanoi, Toronto, Cairo, Rajkot, Milan, Jaipur, Doha, Ludhiana, Santiago, Ho Chi Minh City.

Global Steelindia

Global Steel is a significant manufacturer and exporter of all ferrous and non-ferrous metals. As a pioneer and leader in the industry, Global Steel is at the forefront of technology and research.

Quick Contact

Shop No.6, Sonarika Bldg, 25/C, Chandawadi, Cawasji Patel Tank, Mumbai, Maharashtra 400004