ASME/ASTM SA/A192/A179/A210 Seamless Carbon Steel Boiler Tubes for High-Pressure Service

• After-sales Service: Supplied
• Warranty: 30 Years
• Type: Sans Couture
• Technique: Étiré à Froid
• Matériel: acier au carbone
• Traitement de surface: Vernissage
• N° de Modèle.: seamless
• Usage: Transport par pipeline, chaudière tuyau, Hydraulique / Automobile tuyau, Huile / forage de gaz, Nourriture / Boisson / Produits laitiers, Machines pour l′industrie, Industrie chimique, Exploitation minière, Construction et décoration, But spécial
• Forme de la section: Rond
• application: électricité/nucléaire
• application2: exploitation du pétrole et du gaz
• application3: raffinage du pétrole
• application4: industrie chimique et chimique fine
• application5: industrie chimique du charbon
• application6: ingénierie offshore et construction navale
• application7: dessalement de l′eau de mer et traitement de l′eau
• application8: gaz naturel
• application9: tubes d′instrumentation
• application10: échangeur thermique/condenseur/transfert thermique/radiateur
• application11: engrais chimique/fibres
• application12: tube sanitaire
• application13: aviation et aérospatiale
• application14: champ pétrolifère
• application15: camion-citerne
• Paquet de Transport: Plywood Case, Bundled with Plastic Bags
• Spécifications: OD 17.2-168.3mm
• Marque Déposée: EZS
• Origine: China
• Code SH: 73043190
• Capacité de Production: 200000 Tons/Year

Description de Produit

The semi-finished product for U bend tubes are heat exchanger tubes, manufactured and supplied according to DIN 28180 and ASTM A179
 

Chemical Composition and Mechanical Properties (Part)

Standard

Grade

Chemical Components (%)

Mechanical Properties

C

Si

Mn

P

S

Mo

Cr

V

T.S.  (Mpa)

Y.S.  (Mpa)

E.L. (%)

Hardness (HRB)

ASME SA179

SA179

0.06-0.18

/

0.27-0.63

≤0.035

≤0.035

/

/

/

≥325

≥180

≥35

≤72

ASME SA192

SA192

0.06-0.18

≤0.25

0.27-0.63

≤0.035

≤0.035

/

/

/

≥325

≥180

≥35

≤77

ASME SA210

A1

≤0.27

≥0.10

≤0.93

≤0.035

≤0.035

/

/

/

≥415

≥255

≥30

≤79

C

≤0.35

≥0.10

0.29-1.06

≤0.035

≤0.035

/

/

/

≥485

≥275

≥30

≤89

ASTM A333 /A334

GR.1

≤0.30

/

0.4-1.06

≤0.025

≤0.025

/

/

/

≥380

≥205

≥35

-45°

GR.6

≤0.30

≥0.10

0.29-1.06

≤0.025

≤0.025

/

/

/

≥415

≥240

≥30

-45°

GR.8

≤0.13

0.13-0.32

≤0.90

≤0.025

≤0.025

/

/

8.40-9.60

≥690

≥515

≥22

-195°

U bend tubes for heat exchangers applied mostly in oil and gas plants, chemical and petrochemical plants, refineries, power plants and renewable energy plants. Low fin tubes can be supplied in the form of U bends.

U-Bend Fabrication Tolerances

U-bend tubes are widely used in heat-exchanger systems. Heat-exchanger equipment on the basis of seamless stainless U-tubes is essential in strategically important and critical fields - nuclear and petrochemical machine building.

 

Item	Condition (when)	Tolercance
Ovality	Nominal bend radius ≤ 2 x nominal OD	less than or equal to 12%
	2 x nominal OD < Nominal bend radius ≤ 4 x nominal OD	less than or equal to 10%
	Nominal bend radius > 4 x nominal OD	less than or equal to 5%
	Nominal bend radius ≤ 2 x nominal OD	0.75 x nominal wall
Mimimum wall thickness	2 x nominal OD < Nominal bend radius ≤ 4 x nominal OD	0.8 x nominal wall
	Nominal bend radius > 4 x nominal OD	0.9 x nominal wall
	Nominal bend radius ≤ 8" (200mm)	+/-3/64"(1mm)
Bending Radius	8" (200mm) < Nominal bend radius ≤ 16" (400mm)	+/-1/16"(1mm)
	Nominal bend radius >16" (400mm)	+/-5/64"(1mm)
Disrance between legs		Max 1/16"(1.5mm)
Wall thinning of bending area		Max 17%
Difference between leg lengths at the ends	Leg length ≤ 16' (4.88m)	+1/8"(3mm)
	Leg length > 16' (4.88m)	+3/16"(5mm)
Deviation from plane of bend		≤ 3/16"(1.5mm)
Flattening on bend		≤ 10% nominal diameter
Straight leg length	≤5m	+1/8"(3mm)
	>5m	+3/16(5mm)
Total tube length including radius	≤6m	+3/16(5mm)
	>6m	+5/16"(8mm)

Material

'U' bends are produced, controlled and measured fully in accordance with relevant standards.

 

Material	Grade
Carbon Steel	SA 179 / A 179
Carbon Steel	SA 210 / A 210
Carbon Steel	SA 334 / A 334
Stainless Steel	SA 213 / A 213
Duplex Stainless Steel	SA 789 / A 789

 

Applications

U-bend tubes are widely used in heat-exchanger systems.

Heat-exchanger equipment on the basis of seamless stainless U-tubes is essential in strategically important and critical fields - nuclear and petrochemical machine building.

"U bend tubes for heat exchangers applied mostly in Oil & Gas plants, Chemical & Petrochemical plants, Refineries, Power plants, Renewable energy plants."

• Object medium: 10% sodium
• hydroxide+5% sodium hypochlorite
• Shell Diameter: ø 800
• Working Pressure: 1.5mpa
• Working Temperature: 40º C-90º C
• Heat Exchange Surface Area: 100M2
• Material: Gr1\Gr2

Fin tubes

Fin tubes are used in applications involving the transfer of heat from a hot fluid to a colder fluid through a tube wall. Furthermore, finned tubes are used when the heat transfer coefficient on the outside of the tubes is appreciably lower than that on the inside.