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Organe de Asamblare cu Filete in INCH
ORGANE DE ASAMBLARE pentru industria petrochimica si navala


Prezoane dublu filetate :

  • Oteluri carbon / mediu aliate : B7, L7, B16, B7M, L7M ;
  • Inox : B8, B8M ;

Prezoane complet filetate :

  • Oteluri carbon / mediu aliate : B7, B7M, L7, L7M, L43, B16 ;
  • Inox : B8 CL. 1&2, B8M CL. 1&2, B8T, B8C ;

Suruburi si bolturi hexagonale :

  • Oteluri carbon / mediu aliate : A307B, B7, L7, B16 ;
  • Inox : B8, B8M, B8T ;

Piulite hexagonale :

  • Oteluri carbon / mediu aliate : gr. 2H, 2HM, 3, 4, 7, 7M ;
  • Inox : grupele 8, 8M ;

Saibe :   

  • Oteluri carbon / mediu aliate
  • Inox : AISI 304, AISI 316

 

Materiale utilizate

  • Otel aliat (170ksi – 36-43 Rc) ;
  • ASTM A 193 B7, L7, B16, B8 (inox AISI 304), B8M (inox AISI 316) ;
  • ASTM A 437, B4B ;
  • ASTM A 453, 660 A&B ;
  • Inox AISI 422 ;

 

Piulite hexagonale – marcaj si proprietati mecanice 

Marcaj de identificare a gradului

Specificatie

Material

Dimensiuni
disponibile

Proof Load Stress, ksi

Hardness Rockwell

Min

Max

ASTM A194 - Grade 2

ASTM A194 Grad 2

Otel carbon

¼’’ - 4’’

150

159

352

ASTM A194 - Grade 2H

ASTM
A194 Grad 2H

Otel carbon , calit si revenit

¼’’ - 4’’

175

C24

C38

ASTM A194 - Grade 2HM

ASTM A194 Grad 2HM

Otel carbon, Calit si revenit

¼’’ - 4’’

150

159

237

ASTM A194 - Grade 4

ASTM A194 Grad 4

Otel slab/mediu aliat, calit si revenit

¼’’ - 4’’

175

C24

C38

ASTM A194 - Grade 7

ASTM A194 Grad 7

Otel slab/mediu aliat, calit si revenit

¼’’ - 4’’

175

C24

C38

ASTM A194 - Grade 7M

ASTM A194 Grad 7M

Otel slab/mediu aliat, calit si revenit

¼’’ - 4’’

150

159

237

ASTM A194 - Grade 8

ASTM A194 Grad 8

Inox AISI 304

¼’’ - 4’’

80

126

300

ASTM A194 - Grade 8M

ASTM A194 Grad 8M

Inox AISI 316

¼’’ - 4’’

80

126

300

 

Suruburi si prezoane

Grupa

B7

Otel mediu aliat, AISI 4140/4142, calit si reveni

B8

Clasa 1 inox, AISI 304

B8M

Clasa 1 inox, AISI 316

B8

Clasa 2 inox, AISI 304, durificat

B8M

Clasa 2 inox, AISI 316, durificat


Proprietati mecanice

Grupa

Dimensiune

Tensile ksi, min

Yield, ksi, min

Elong, %, min

RA % min

B7

pana la 2 ½’’

125

105

16

50

de la 2 ⅝’’  – 4’’

115

95

16

50

4 ⅛’’ - 7’’

100

75

18

50

B8 Clasa 1

Toate

75

30

30

50

B8M Clasa 1

Toate

75

30

30

50

B8 Clasa 2

pana la ¾’’

125

100

12

35

⅞’’ - 1’’

115

80

15

35

1 ⅛’’ – 1 ¼’’

105

65

20

35

1 ⅜’’ – 1 ½’’

100

50

28

45

B8M Clasa 2

pana la ¾’’

110

95

15

45

⅞’’ - 1’’

100

80

20

45

1 ⅛’’ – 1 ¼’’

95

65

25

45

1 ⅜’’ – 1 ½’’

90

50

30

45