Standards
ASTM / ASME B729, B464, B468 / SB729, SB464, SB468
Outer Diameter
6.00 mm OD up to 914.4 mm OD, Sizes up to 24â?? NB
Thickness
0.3mm â?? 50 mm
Type
Seamless / ERW / Welded Pipes
Schedule
SCH20, SCH30, SCH40, STD, SCH80, XS, SCH60, SCH80, SCH120, SCH140, SCH160, XXS
Seamless Pipes & Tubes Size
1 / 8â?³ NB â?? 24â?³ NB
ERW Pipes & Tubes Size
1 / 8â?³ NB â?? 36â?³ NB
Length
Single Random, Double Random & Required Length
End
Plain End, Beveled End, Treaded
Alloy 20 Weldolets
High Precision Steel Pipe for Gas spring Cylinder Type:Seamless and Welded Steel Tube Roughness 0.1-0.8ra Material E195-E235,Q195-Q235,#10,#20,#45,SAE1010,SAE1020 Surface:Black/bright Standard:DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094-2000, GB/T 8163-1999, JIS G3101 Size :OD 3mm-140mm Thickness 0.5-20mm Processing :Cold rolled /cold drawn 1. BK (+C) No heat treatment after last cold forming process. 2. BKW (+LC) After last heat treatment there is a light finishing pass (cold drawing) 3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed. 4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere. 5. NBK (+N) After the final cold forming process the tubes are annealed above the upper Woven bag / wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request. Usage: Gas Spring Cylinder
High Precision Steel Pipe for Gas spring Cylinder Type:Seamless and Welded Steel Tube Roughness 0.1-0.8ra Material E195-E235,Q195-Q235,#10,#20,#45,SAE1010,SAE1020 Surface:Black/bright Standard:DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094-2000, GB/T 8163-1999, JIS G3101 Size :OD 3mm-140mm Thickness 0.5-20mm Processing :Cold rolled /cold drawn 1. BK (+C) No heat treatment after last cold forming process. 2. BKW (+LC) After last heat treatment there is a light finishing pass (cold drawing) 3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed. 4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere. 5. NBK (+N) After the final cold forming process the tubes are annealed above the upper Woven bag / wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request. Usage: Gas Spring Cylinder
High Precision Steel Pipe for Gas spring Cylinder Type:Seamless and Welded Steel Tube Roughness 0.1-0.8ra Material E195-E235,Q195-Q235,#10,#20,#45,SAE1010,SAE1020 Surface:Black/bright Standard:DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094-2000, GB/T 8163-1999, JIS G3101 Size :OD 3mm-140mm Thickness 0.5-20mm Processing :Cold rolled /cold drawn 1. BK (+C) No heat treatment after last cold forming process. 2. BKW (+LC) After last heat treatment there is a light finishing pass (cold drawing) 3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed. 4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere. 5. NBK (+N) After the final cold forming process the tubes are annealed above the upper Woven bag / wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request. Usage: Gas Spring Cylinder
High Precision Steel Pipe for Gas spring Cylinder Type:Seamless and Welded Steel Tube Roughness 0.1-0.8ra Material E195-E235,Q195-Q235,#10,#20,#45,SAE1010,SAE1020 Surface:Black/bright Standard:DIN, GB, JIS, DIN 17175, DIN 2391, GB 5310-1995, GB/T 13793-1992, GB/T 3094-2000, GB/T 8163-1999, JIS G3101 Size :OD 3mm-140mm Thickness 0.5-20mm Processing :Cold rolled /cold drawn 1. BK (+C) No heat treatment after last cold forming process. 2. BKW (+LC) After last heat treatment there is a light finishing pass (cold drawing) 3. BKS (+SR) After the final cold forming process the tubes are stress relieve annealed. 4. GBK (+A) After the final cold forming process the tubes are annealed in a controlled atmosphere. 5. NBK (+N) After the final cold forming process the tubes are annealed above the upper Woven bag / wooden or crate carton/ Bundle Packing/ Plain end or vanished as per customer's request. Usage: Gas Spring Cylinder
Alloy 20 is an austenitic nickel-iron-chromium alloy with outstanding corrosion resistance. Alloy 20 Olets provide strong sulfuric acid resistance. This alloy is also resistant to phosphoric acid, nitric acid, and aqueous salt solutions. Alloy 20 Olets are an excellent choice when chloride stress corrosion cracking is a concern since they resist pitting and crevice corrosion. Because the rate of corrosion can substantially increase in chloride ion-containing environments, caution should be exercised. Alloy 20 Olets may provide cost savings while outperforming typical stainless steels when compared to higher nickel-based alloys. Alloy 20 is a super-austenitic stainless steel that was developed for maximum corrosion resistance to sulfuric acid and other extreme environments where regular austenitic grades are ineffective. Hot-working and cold-working are two traditional ways of producing Alloy 20. It's also vital to determine whether or not the desired corrosion resistance can be achieved in a given environment. Alloy 20 is used in a variety of industries, including chemical processing, petrochemical and refining, marine, pharmaceutical, and food processing. End-use applications include storage tanks, mixing tanks, agitators, pump and valve parts, food processing equipment, fasteners, and fittings. Plastics and synthetic fiber manufacturing Equipment for chemical and petroleum processing, heat exchangers, and process piping
Alloy steel seamless pipes and tubing Mechanical tubing Structural alloy pipes Boiler tube SS seamless pipes and tubing Duplex seamless pipes Corrosion resistant alloy seamless pipes Metallurgical clad pipes Tubing and casing Line pipe Drill pipe
Roma International’s Main Products: Product Rang: Seamless Steel Tubes, Welding Steel Pipes, OCTG, Pipe Fittings Outside Diameter: DN10 – DN1500 Wall Thickness: 1 – 180 mm Length Rang: 50 – 18000 mm, or as per technology agreements Material: Carbon Steel, Alloy Steel, Stainless Steel, Nickel Based Alloy Hastelloy Alloy Pipes
Astm a 106 , astm a 179, astm a 192, astm a 210, din 17175
