Products (Alloy Steel Pipes, Tubes, Fittings)

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Rolf Engg. Solutions Inc.

Room No. 30, 1st Floor, Jariwala Bldg, 1st Khetwadi Lane, S.V.P. Road, Mumbai 400004

Email : sales@rolfalloy.com

For Immediate Shipment

• ASTM A209 : T1, T1a, T1b
• ASTM A250 : T1, T1a, T1b, T2, T11, T12, T22
• ASTM A334 : Grade 1, Grade 3, Grade 6, Grade 7, Grade 8, Grade 9, Grade 11
• ASTM A335 : P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, P23, P24, P36, P91, P92, P122, P911
• ASTM A369 : FPA, FPB, FP1, FP2, FP5, FP9, FP11, FP12, FP21, FP22, FP91, FP92
• ASTM A519 : 4130, 4140
• ASTM A691 : CM65, CM70, CM75, CMSH70, CMS75, CMSH80, ½ Cr, 1Cr, 1¼ Cr, 2 ¼ Cr, 3Cr, 5Cr, 9Cr, 91

Alloy Steel Seamless Pipe

Alloy Steel Seamless Tube

Alloy Steel Welded Pipe

Alloy Steel Welded Tube

Alloy Steel ERW Pipe

Alloy Steel ERW Tube

Alloy Steel Buttweld Fittings

Alloy Steel Socketweld Fittings

Alloy Steel Plates

Alloy Steel Flanges

 

Alloy steels contain varying amounts of different metals and materials to specialize their properties. Some of the most common materials added include chromium, molybdenum, nickel, and silicon.

Chromium is added in smaller amounts (0.5-2%) to increase hardenability and larger amounts (4-18%) to increase corrosion resistance.

• Molybdenum is added in amounts of 0.25-0.40% to increase the toughness of the steel.
• Nickel is added in smaller amounts (2-5%) to increase toughness and in larger amounts (12-20%) to increase corrosion resistance.
• Silicon is added to steel in smaller amounts (0.2-0.7%) to increase strength and in larger amounts (>2%) to improve its magnetic properties.
  

Rolf Engg Solutions carries a full range of alloy pipe, tubes, flanges, plates, fittings in seamless & welded types.

 

ROLF ENGINEERING SOLUTIONS stocks a wide variety of alloy steel pipes & tubes in seamless, welded types. The grade stocked by Rolf Engg Solutions includes ASTM standard grades in various high tensile & critical applications.

• ASTM A209 : T1, T1a, T1b
• ASTM A213 : T2, T5, T5b, T5c, T9, T11, T12, T17, T21, T22, T23, T24, T36, T91, T92, T122, T911
• ASTM A250 : T1, T1a, T1b, T2, T11, T12, T22
• ASTM A334 : Grade 1, Grade 3, Grade 6, Grade 7, Grade 8, Grade 9, Grade 11
• ASTM A335 : P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, P23, P24, P36, P91, P92, P122, P911
• ASTM A369 : FPA, FPB, FP1, FP2, FP5, FP9, FP11, FP12, FP21, FP22, FP91, FP92
• ASTM A426 : CP1, CP2, CP5, CP5b, CP9, CP91, CP11, CP12, CP15, CP21, CP22, CPCA15  
• ASTM A513 : 1008, 1009, 1010, 1012, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1027, 1030, 1033, 1035, 1040, 1050, 1060, 1340, 1524, 4118, 4130, 4140, 5130, 8620, 8630  
• ASTM A519 : 1330, 1335, 1340, 1345, 3140, E3310, 4012, 4023, 4024, 4027, 4028, 4037, 4042, 4047, 4063, 4118, 4130, 4135, 4137, 4140, 4142, 4145, 4147, 4150, 4320, 4337, E4337, 4340, E4340, 4422, 4427, 4520, 4615, 4617, 4620, 4718, 4720, 4815, 4817, 4820, 5015, 5046, 5115, 5120, 5130, 5132, 5135, 5140, 5145, 5147, 5150, 5155, 5160, 52100, E50100, E51100, E52100, 6118, 6120, 6150, E7140, 8115, 8615, 8617, 8620, 8622, 8625, 8627, 8630, 8637, 8640, 8642, 8645, 8650, 8655, 8660, 8720, 8735, 8740, 8742, 8822, 9255, 9260, 9262, E9310
• ASTM A595 : Grade A, Grade B, Grade C
• ASTM A618 : Grade Ia, Grade Ib, Grade II, Grade III
• ASTM A691 : CM65, CM70, CM75, CMSH70, CMS75, CMSH80, ½ Cr, 1Cr, 1¼ Cr, 2 ¼ Cr, 3Cr, 5Cr, 9Cr, 91
• ASTM A714 : Grade I, Grade II, Grade III, Grade IV, Grade V, Grade VI, Grade VII, Grade VIII

Alloy Steel Boiler and Heat Exchanger Tubes : Equivalent Grades

• ASTM A209 T1, T1a, T1b
• ASTM A250 T1, T1a, T2, T12, T1b, T11, T22
• ASTM A213 T2, T12, T11, T22, T5, T9, T5b, T5c, T17, T21, T23, T91, T92
• ASME SA209 T1, T1a, T1b
• ASME SA250 T1, T1a, T2, T12, T1b, T11, T22
• ASME SA213 T2, T12, T11, T22, T5, T9, T5b, T5c, T17, T21, T23, T91, T92
• ASME SA199 T11, T22, T5, T9
• JIS G 3462 STBA 12, 13
• JIS G 3462 STBA 20, 22, 23, 24, 25, 26
• BS 3606 243, 3059-P2 243, 3059-P2 620-460, BS 3606 245, 3059-P2 629-470, 3059-P2 629-590, 3059-P2 762, BS 3606 620, 3606 621, 3606 622, 3606 625, 3059-P2 622-490, 3059-P2 304S51, 3059-P2 306S51, 3059-P2 316S52, 3059-P2 316S51, 3059-P2 321S51, 3059-P2 347S51, 3059-P2 215S15
• ISO 2604 II TS26, ISO 2604 III TS26, 2604 III TS32, ISO 2604 II TS33, 2604 II TS32, 2604 II TS34, 2604 II S37, 2604 II S38, 2604 II S39, 2604 II S40
• ABS K, ABS M (=A209-T1b), ABS L, ABS O, ABS N, ABS P
• NK KSTB 12, NK KSTB 22, KSTB 23, KSTB 24
• LRS Sec 6 1Cr 1/2Mo-440, Sec 6 2-1/2Cr 1Mo-410, LRS Sec 6 2-1/2Cr 1Mo-490
• DNV Sec 4-E-TS380, Sec 4-E-TS450-1, DNV Sec 4-E-TS440, Sec 4-E-TS410-3, Sec 4-E-TS410-4, Sec 4-E-TS450-2, Sec 4-E-TS430, Sec 4-E-TS500, Sec 4-E-TS690, DNV Sec 4-E-TS460-2, Sec 4-E-TS590, Sec 4-E-TS610

Alloy Steel Tubes for Generator Boiler

• ASTM A213 T23, T91
• ASME SA213 T23, T91
• KA-STBA 21, KA-STBA 24J1, KA-STBA 28

Alloy Steel Pipes for High Pressure Service

• GB 5310 CNB-9 12Cr1Mov

Alloy Steel Pipes for High Temperature Service

• ASTM A335 P1, P2, P12, P11, P22, P5, P9, P5b/P5c, P15, P21, P91, P92
• ASME SA335 P1, P2, P12, P11, P22, P5, P9, P5b/P5c, P15, P21, P91, P92
• JIS G 3458 STPA 12, STPA 20, STPA 22, STPA 23, STPA 24, STPA 25, STPA 26
• BS 3604 P1 660, 3604 P1 620-440, 3604 P1 621, 3604 P1 622, 3604 P1 625, 3604 P1 629-470, 3604 P1 591, 3604 P1 629-590, 3604 P1 762
• DIN 17175 15Mo3, 17177 15Mo3, 17175 13CrMo44, 17175 10CrMo910, 17175 14MoV63, 17175 X20CrMoV12 1
• ISO 2604 II TS26, 2604 III TW26, 2604 II TS32, 2604 III TW32, 2604 II TS34, 2604 III TS37, 2604 II TS38, 2604 II TS33, 2604 II TS39, 2604 II TS40
• ABS 6, ABS 7, ABS 12, ABS 11, ABS 13, ABS 14
• NK KSTPA 12, KSTPA 22, KSTPA 23, KSTPA 24
• LRS Sec 2 1Cr 1/2Mo440, Sec 3 1Cr 1/2Mo440, Sec 2 2-1/4Cr1Mo410, Sec 2 2-1/2Cr1Mo490, Sec 2 /2Cr1/2Mo1/4V460

Alloy Steel Pipes for Generator Piping

• ASTM A335 P23, P91
• ASME SA335 P23, P91
• KA-STPA 24J1, KA-STPA 28

ROLF ENGINEERING stocks ASTM standard pipes with NACE MR0175, NACE MR0103, HIC, SSC, OFFSHORE SERVICE, SOUR SERVICE, SOHIC, SCC certified materials with certifications which include EN 10204 3.1, EN 10204 3.2 etc. the stock ranges includes pipes from around the world with Japanese origin, European Origin, Korean origin, Indian Origin, USA origin, African origin pipes & tubes in seamless, erw & welded type materials.

GRADE FOR ALLOY STEEL SEAMLESS PIPES, ALLOY STEEL SEAMLESS TUBES, ALLOY STEEL WELDED TUBES, ALLOY STEEL WELDED PIPES, ALLOY STEEL ERW PIPES, ALLOY STEEL ERW TUBES, ALLOY STEEL BUTTWELD FITTINGS, ALLOY STEEL SOCKETWELD FITTINGS, ALLOY STEEL FLANGES, ALLOY STEEL PLATES

ASTM A209
ASTM A209 T1, T1a, T1b (Standard Specification For Seamless Carbon-Molybdenum Alloy-Steel Boiler and Superheater Tubes
Grades : ASTM A209 Grade T1, ASTM A209 Grade T1a, ASTM A209 Grade T1b

ASTM A213
ASTM A213 T2, T5, T5b, T5c, T9, T11, T12, T17, T21, T22, T23, T24, T36, T91, T92, T122, T911 (Standard Specification For Seamless Ferritic and Austenitic Alloy-Steel Boiler, Superheater, and Heat-Exchanger Tubes) 
Grades : ASTM A213 T2, ASTM A213 T5, ASTM A213 T5b, ASTM A213 T5c, ASTM A213 T9, ASTM A213 T11, ASTM A213 T12, ASTM A213 T17, ASTM A213 T21, ASTM A213 T22, ASTM A213 T23, ASTM A213 T24, ASTM A213 T36, ASTM A213 T91, ASTM A213 T92, ASTM A213 T122, ASTM A213 T911

ASTM A250
ASTM A250 T1, T1a, T1b, T2, T11, T12, T22 (Standard Specification For Electric-Resistance-Welded Ferritic Alloy Steel Boiler and Superheater Tubes)
Grades : ASTM A250 Grade T1, ASTM A250 Grade T1a, ASTM A250 Grade T1b, ASTM A250 Grade T2, ASTM A250 Grade T11, ASTM A250 Grade T12, ASTM A250 Grade T22

ASTM A334
ASTM A334 Grade 1, Grade 3, Grade 6, Grade 7, Grade 8, Grade 9, Grade 11 (Standard Specification For Seamless and Welded Carbon and Alloy-Steel Tubes for Low-Temperature Service)
Grades : ASTM A334 Grade 1, ASTM A334 Grade 3, ASTM A334 Grade 6, ASTM A334 Grade 7, ASTM A334 Grade 8, ASTM A334 Grade 9, ASTM A334 Grade 11.

ASTM A335
ASTM A335 P1, P2, P5, P5b, P5c, P9, P11, P12, P15, P21, P22, P23, P24, P36, P91, P92, P122, P911(Standard Specification For Seamless Ferritic Alloy-Steel Pipe for High-Temperature Service)
Grades : ASTM A335 P1, ASTM A335 P2, ASTM A335 P5, ASTM A335 P5b, ASTM A335 P5c, ASTM A335 P9, ASTM A335 P11, ASTM A335 P12, ASTM A335 P15, ASTM A335 P21, ASTM A335 P22, ASTM A335 P23, ASTM A335 P24, ASTM A335 P36, ASTM A335 P91, ASTM A335 P92, ASTM A335 P122, ASTM A335 P911

ASTM A369
ASTM A369 FPA, FPB, FP1, FP2, FP5, FP9, FP11, FP12, FP21, FP22, FP91, FP92 (Standard Specification For Carbon and Ferritic Alloy Steel Forged and Bored Pipe for High-Temperature Servie)
Grades : ASTM A369 FPA, ASTM A369 FPB, ASTM A369 FP1, ASTM A369 FP2, ASTM A369 FP5, ASTM A369 FP9, ASTM A369 FP11, ASTM A369 FP12, ASTM A369 FP21, ASTM A369 FP22, ASTM A369 FP91, ASTM A369 FP92

ASTM A426
ASTM A426 CP1, CP2, CP5, CP5b, CP9, CP91, CP11, CP12, CP15, CP21, CP22, CPCA15 (Standard Specification For Centrifugally Cast Ferritic Alloy Steel Pipe for High-Temperature Service)
Grades : ASTM A426 CP1, ASTM A426 CP2, ASTM A426 CP5, ASTM A426 CP5b, ASTM A426 CP9, ASTM A426 CP91, ASTM A426 CP11, ASTM A426 CP12, ASTM A426 CP15, ASTM A426 CP21, ASTM A426 CP22, ASTM A426 CPCA15.

ASTM A450 (Standard Specification For General Requirements for Carbon and Low Alloy Steel Tubes)

ASTM A513
ASTM A513 1008, 1009, 1010, 1012, 1015, 1016, 1017, 1018, 1019, 1020, 1021, 1022, 1023, 1024, 1025, 1026, 1027, 1030, 1033, 1035, 1040, 1050, 1060, 1340, 1524, 4118, 4130, 4140, 5130, 8620, 8630 (Standard Specification For Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing)
Grades : ASTM A513 1008, ASTM A513 1009, ASTM A513 1010, ASTM A513 1012, ASTM A513 1015, ASTM A513 1016, ASTM A513 1017, ASTM A513 1018, ASTM A513 1019, ASTM A513 1020, ASTM A513 1021, ASTM A513 1022, ASTM A513 1023, ASTM A513 1024, ASTM A513 1025, ASTM A513 1026, ASTM A513 1027, ASTM A513 1030, ASTM A513 1033, ASTM A513 ASTM A513 1035, ASTM A513 1040, ASTM A513 1050, ASTM A513 1060, ASTM A513 1340, ASTM A513 1524, ASTM A513 ASTM A513 4118, ASTM A513 4130, ASTM A513 4140, ASTM A513 5130, ASTM A513 8620, ASTM A513 8630

ASTM A519
ASTM A519 1330, 1335, 1340, 1345, 3140, E3310, 4012, 4023, 4024, 4027, 4028, 4037, 4042, 4047, 4063, 4118, 4130, 4135, 4137, 4140, 4142, 4145, 4147, 4150, 4320, 4337, E4337, 4340, E4340, 4422, 4427, 4520, 4615, 4617, 4620, 4718, 4720, 4815, 4817, 4820, 5015, 5046, 5115, 5120, 5130, 5132, 5135, 5140, 5145, 5147, 5150, 5155, 5160, 52100, E50100, E51100, E52100, 6118, 6120, 6150, E7140, 8115, 8615, 8617, 8620, 8622, 8625, 8627, 8630, 8637, 8640, 8642, 8645, 8650, 8655, 8660, 8720, 8735, 8740, 8742, 8822, 9255, 9260, 9262, E9310 (Standard Specification For Seamless Carbon and Alloy Steel Mechanical Tubing)
Grades : ASTM A519 1330, ASTM A519 1335, ASTM A519 1340, ASTM A519 1345, ASTM A519 3140, ASTM A519 E3310, ASTM A519 4012, ASTM A519 4023, ASTM A519 4024, ASTM A519 4027, ASTM A519 4028, ASTM A519 4037, ASTM A519 4042, ASTM A519 4047, ASTM A519 4063, ASTM A519 4118, ASTM A519 4130, ASTM A519 4135, ASTM A519 4137, ASTM A519 4140, ASTM A519 4142, ASTM A519 4145, ASTM A519 4147, ASTM A519 4150, ASTM A519 4320, ASTM A519 4337, ASTM A519 E4337, ASTM A519 4340, ASTM A519 E4340, ASTM A519 4422, ASTM A519 4427, ASTM A519 4520, ASTM A519 4615, ASTM A519 4617, ASTM A519 4620, ASTM A519 4718, ASTM A519 4720, ASTM A519 4815, ASTM A519 4817, ASTM A519 4820, ASTM A519 5015, ASTM A519 5046, ASTM A519 5115, ASTM A519 5120, ASTM A519 5130, ASTM A519 5132, ASTM A519 5135, ASTM A519 5140, ASTM A519 5145, ASTM A519 5147, ASTM A519 5150, ASTM A519 5155, ASTM A519 5160, ASTM A519 52100, ASTM A519 E50100, ASTM A519 E51100, ASTM A519 E52100, ASTM A519 6118, ASTM A519 6120, ASTM A519 6150, ASTM A519 E7140, ASTM A519 8115, ASTM A519 8615, ASTM A519 8617, ASTM A519 8620, ASTM A519 8622, ASTM A519 8625, ASTM A519 8627, ASTM A519 8630, ASTM A519 8637, ASTM A519 8640, ASTM A519 8642, ASTM A519 8645, ASTM A519 8650, ASTM A519 8655, ASTM A519 8660, ASTM A519 8720, ASTM A519 8735, ASTM A519 8740, ASTM A519 8742, ASTM A519 8822, ASTM A519 9255, ASTM A519 9260, ASTM A519 9262, ASTM A519 E9310.

ASTM A530
ASTM A530 (Standard Specification For General Requirements for Specialized Carbon and Alloy Steel Pipes)

ASTM A595
ASTM A595 Grade A, Grade B, Grade C (Standard Specification For Steel Tubes, Low-Carbon or High-Strength Low-Alloy, Tapered for Structural Use)
Grades : ASTM A595 Grade A, ASTM A595 Grade B, ASTM A595 Grade C.

ASTM A618
ASTM A618 Grade Ia, Grade Ib, Grade II, Grade III(Standard Specification For Hot-Formed Welded and Seamless High-Strength Low-Alloy Structural Tubing)
Grades : ASTM A618 Grade Ia, ASTM A618 Grade Ib, ASTM A618 Grade II, ASTM A618 Grade III

ASTM A691
ASTM A691 CM65, CM70, CM75, CMSH70, CMS75, CMSH80, ½ Cr, 1Cr, 1¼ Cr, 2 ¼ Cr, 3Cr, 5Cr, 9Cr, 91 (Standard Specification for Carbon and Alloy Steel Pipe, Electri-Fusion-Welded for High-Pressure Service at High Temperatures)
ASTM A691 CM65, ASTM A691 CM70, ASTM A691 CM75, ASTM A691 CMSH70, ASTM A691 CMS75, ASTM A691 CMSH80, ASTM A691 ½ Cr, ASTM A691 1Cr, ASTM A691 1¼ Cr, ASTM A691 2 ¼ Cr, ASTM A691 3Cr, ASTM A691 5Cr, ASTM A691 9Cr, ASTM A691 91.

ASTM A714
ASTM A714 Grade I, Grade II, Grade III, Grade IV, Grade V, Grade VI, Grade VII, Grade VIII (Standard Specification for High-Strength Low-Alloy Welded and Seamless Steel Pipe)
ASTM A714 Grade I, ASTM A714 Grade II, ASTM A714 Grade III, ASTM A714 Grade IV, ASTM A714 Grade V, ASTM A714 Grade VI, ASTM A714 Grade VII, ASTM A714 Grade VIII.

ASTM A847
ASTM A847 (Standard Specification For Cold-Formed Welded and Seamless high-Strength, Low-Alloy Structural Tubing with Improved Atmospheric Corrosion Resistance)

ASTM A1016
ASTM A1016 (Standard Specification For General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel and Stainless Steel Tubes)

ROLF ENGINEERING SOLUTIONS INC. exports Alloy Steel Seamless Pipes, Alloy Steel Seamless Tubes, Alloy Steel Welded Pipes, Alloy Steel Welded Tubes, Alloy Steel ERW Pipes, Alloy Steel ERW Tubes, Alloy Steel Buttweld Fittings, Alloy Steel Socketweld Fittings, Alloy Steel Plates, Alloy Steel Flanges to Countries like : Saudi Arabia, UAE, Kuwait, USA, Europe, South Africa, Australia, Afghanistan, Albania, Algeria, American Samoa, Andorra, Angola, Anguilla, Antarctica, Antigua And Barbuda, Argentina, Armenia, Aruba, Australia, Austria, Azerbaijan, The Bahamas, Bahrain, Barbados, Belarus, Belgium, Bermuda, Bhutan, Bolivia, Bosnia and Herzegovina, Botswana, Bouvet Island, Brazil, British Indian Ocean, Brunei, Bulgaria, Burkina Faso, Burundi, Cambodia, Cameroon, Canada, Cape Verde, Cayman Islands, Central African Republic, Chile, China (Hong Kong S.A.R.), China (Macau S.A.R.), Christmas Islands (CX), Cocos (Keeling) Islands, Colombia, Comoros, Congo, Congo Democractic RepubliC, Cook Islands, Costa Rica, Cote D'Ivoire (Ivory Coast), Croatia (Hrvatska), Cuba, Cyprus, Czech Republic, Denmark, Djibouti, Dominica, Dominican Republic, East Timor, Ecuador, EgypT, El Salvador, Equatorial Guinea, Eritrea, Estonia, Ethiopia, Falkland Islands, Faroe Islands, Fiji Islands, Finland, France, French Guiana, French Polynesia, French Southern Territories, Gabon, The Gambia, Georgia, Germany, Ghana, Gibraltar, Greece, Greenland, Grenada, Guadeloupe, Guam, Guatemala, Guinea, Guinea-Bissau, Guyana, Haiti, Heard and McDonald Islands, Honduras, Hungary, Iceland, India, Indonesia, Iran, Iraq, Ireland, Israel, Italy, Jamaica, Japan, Jordan, Kazakhstan, Kenya, Kiribati, Korea, Korea, North, Kuwait, Kyrgyzstan, Laos, Latvia, Lebanon, Lesotho, Liberia, Libya, Liechtenstein, Lithuania, Luxembourg, Macedonia, Madagascar, Malawi, Malaysia, Maldives, Mali, Malta, Marshall Islands, Martinique, Mauritania, Mauritius, Mayotte, Mexico, Micronesia, Moldova, Monaco, Mongolia, Montserrat, Morocco, Mozambique, Myanmar, Namibia, Netherlands Antilles, The Netherlands, New Caledonia, New Zealand, Nicaragua, Niger, Nigeria, Niue, Norfolk Island, Northern Mariana Islands, Norway, Oman, Pakistan, Palau, Panama, Papua new Guinea, Paraguay, Peru, Philippines, Pitcairn Island, Poland, Portugal, Puerto Rico, Qatar, Reunion, Romania, RussiA, Rwanda, Saint Helena, Saint Kitts And Nevis, Saint Lucia, Saint Pierre and Miquelon, Saint Vincent / Grenadin, Samoa, San Marino, Sao Tome and Principe, Saudi Arabia, Senegal, Seychelles, Sierra Leone, Singapore, Slovakia, Slovenia, Solomon Islands, Somalia, South Africa, South Georgia, Spain, Sri Lanka, Sudan, Sweden, Switzerland, Syria, Taiwan, Tajikistan, Tanzania, Thailand, Togo, Tokelau, Tonga, Trinidad And Tobago, Tunisia, Turkey, Turkmenistan, Turks And Caicos Islands, Tuvalu, Uganda, Ukraine, United Arab Emirates, United Kingdom, United States, Uzbekistan, Vatican City State (Holy See), Venezuela, Vietnam, Virgin Islands (British), Virgin Islands (US), Wallis And Futuna Islands, Western Sahara, Yemen, Yugoslavia, Zambia, Zimbabwe.

Rolf Engg Solutions Inc is one of the largest Stock holder, Exporter and Supplier of Alloy Steel Pipes & Tubes in seamless and Welded pipes.

p22 pipe	t1 tube	a335	t91 tube	p5 pipe
t5 tube	t11 tube	t22 tube	p1 pipe	t9 tube
p9 pipe	p11 pipe	p91 pipe	a335 seamless	alloy steel

 

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