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Flanges
Lomond Engineering has a full range of ASME B16.5 flanges (Weldneck, Slip-On, Blind, Threaded and Socket Weld) used to provide bolted connections to pipeline equipment. Available in Carbon and Low Temperature steel grades ASTM A105N and A350-LF2, with higher pressure ratings and heavy walls our specialty! Pressure ratings 150#, 300#, 600#, 900# 1500# and 2500# are available, and can also be supplied in A182 grades of Stainless, Duplex and Chrome Moly steels and ASTM A694 high yield.
Additionally, through our in-house machining services we can provide NPT or BSPT drilling & tapping of blinds, flat facing, repair of gramophone faces and other specialty flange modifications as needed.
Lomond are also able to supply line blanks such as Spectacle Blinds, Paddle Blanks and Spacer Rings to ASME B16.48 or customer specific drawings/dimensions. Line blanks are generally used for positive isolation during maintenance and inspection of piping systems and can be manufactured from forged materials (ASTM A105, A182 etc) or plate (ASTM A240 Stainless & Duplex, A516-60/65/70 or A387 Cr/Mo grades).
Flanges
- ASTM A105-N
- ASTM A350-LF2
- ASTM A182-F5/F11/F22
- ASTM A182-F51
- ASTM A182-F53
- ASTM A694-F52/F60/F65/F70
- NACE MR0175/MR0103
- ASME B16.5
- ASME B16.48
- ASME B16.47
Flanges
Lomond Engineering has a full range of ASME B16.5 flanges (Weldneck, Slip-On, Blind, Threaded and Socket Weld) used to provide bolted connections to pipeline equipment. Available in Carbon and Low Temperature steel grades ASTM A105N and A350-LF2, with higher pressure ratings and heavy walls our specialty! Pressure ratings 150#, 300#, 600#, 900# 1500# and 2500# are available, and can also be supplied in A182 grades of Stainless, Duplex and Chrome Moly steels and ASTM A694 high yield.
Additionally, through our in-house machining services we can provide NPT or BSPT drilling & tapping of blinds, flat facing, repair of gramophone faces and other specialty flange modifications as needed.
Lomond are also able to supply line blanks such as Spectacle Blinds, Paddle Blanks and Spacer Rings to ASME B16.48 or customer specific drawings/dimensions. Line blanks are generally used for positive isolation during maintenance and inspection of piping systems and can be manufactured from forged materials (ASTM A105, A182 etc) or plate (ASTM A240 Stainless & Duplex, A516-60/65/70 or A387 Cr/Mo grades).
Flanges
- A420-WPL6
- A420-WPL3
- ASTM A234-WPB
- ASTM A234-WP5
- ASTM A234-WP11
- ASTM A234-WP22
- ASTM A403-WP316L/316L
- ASTM A403-WP304L/304L
- ASTM A105-N
- ASTM A350-LF2
- ASTM A182-F316/316L
- ASTM A182-F304/304L
- ASME B16.9/B16.28
- NACE MR0175/MR0103
Flanges
Lomond Engineering has a full range of ASME B16.5 flanges (Weldneck, Slip-On, Blind, Threaded and Socket Weld) used to provide bolted connections to pipeline equipment. Available in Carbon and Low Temperature steel grades ASTM A105N and A350-LF2, with higher pressure ratings and heavy walls our specialty! Pressure ratings 150#, 300#, 600#, 900# 1500# and 2500# are available, and can also be supplied in A182 grades of Stainless, Duplex and Chrome Moly steels and ASTM A694 high yield.
Additionally, through our in-house machining services we can provide NPT or BSPT drilling & tapping of blinds, flat facing, repair of gramophone faces and other specialty flange modifications as needed.
Lomond are also able to supply line blanks such as Spectacle Blinds, Paddle Blanks and Spacer Rings to ASME B16.48 or customer specific drawings/dimensions. Line blanks are generally used for positive isolation during maintenance and inspection of piping systems and can be manufactured from forged materials (ASTM A105, A182 etc) or plate (ASTM A240 Stainless & Duplex, A516-60/65/70 or A387 Cr/Mo grades).
Flanges
- ASTM A105-N
- ASTM A350-LF2
- ASTM A182-F5/F11/F22
- ASTM A182-F51
- ASTM A182-F53
- ASTM A694-F52/F60/F65/F70
- NACE MR0175/MR0103
- ASME B16.5
- ASME B16.48
- ASME B16.47

Flanges
Lomond Engineering has a full range of ASME B16.5 flanges (Weldneck, Slip-On, Blind, Threaded and Socket Weld) used to provide bolted connections to pipeline equipment. Available in Carbon and Low Temperature steel grades ASTM A105N and A350-LF2, with higher pressure ratings and heavy walls our specialty! Pressure ratings 150#, 300#, 600#, 900# 1500# and 2500# are available, and can also be supplied in A182 grades of Stainless, Duplex and Chrome Moly steels and ASTM A694 high yield.
Additionally, through our in-house machining services we can provide NPT or BSPT drilling & tapping of blinds, flat facing, repair of gramophone faces and other specialty flange modifications as needed.
Lomond are also able to supply line blanks such as Spectacle Blinds, Paddle Blanks and Spacer Rings to ASME B16.48 or customer specific drawings/dimensions. Line blanks are generally used for positive isolation during maintenance and inspection of piping systems and can be manufactured from forged materials (ASTM A105, A182 etc) or plate (ASTM A240 Stainless & Duplex, A516-60/65/70 or A387 Cr/Mo grades).
Flanges
- ASTM A105-N
- ASTM A350-LF2
- ASTM A182-F5/F11/F22
- ASTM A182-F51
- ASTM A182-F53
- ASTM A694-F52/F60/F65/F70
- NACE MR0175/MR0103
- ASME B16.5
- ASME B16.48
- ASME B16.47
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