API 5L LSAW PIPE
Longitudinally Submerged Arc Welded Steel pipes. – Longitudinal edges of steel plates as raw material, are first beveled using carbide milling equipment; Beveled plates are then formed into a U shape using a U-press and subsequently
into an O shape using an O-press.UOE is the name of the method used for production of longitudinally welded large
[dt_gap height=”10″ /]
[dt_button link=”https://morrisvalve.com/wp-content/uploads/2019/08/API-5L-LSAW-DSAW-PIPE-webAg19.pdf” target_blank=”true” button_alignment=”default” animation=”fadeIn” size=”big” style=”default” bg_color_style=”default” bg_hover_color_style=”default” text_color_style=”default” text_hover_color_style=”default” icon=”fa fa-download” icon_align=”left”]Download Technical Specifications[/dt_button]
Longitudinal edges of the plates are then tack welded followed by internal and external welds, using double-sided
submerged arc welding and flaring from production.
The coherence of cutter head and plate clamping system guarantees the invariable parameters during the entire
milling process; accordingly, it ensures the milling quality and lays a good foundation for the success of subsequent
Pipes manufactured by this process are subjected to expanding operation to relieve internal stresses and obtain a
perfect dimensional tolerance.
After the pipes are conveyed to cold expansion, hydrostatic testing and NDT inspection, the pipes will be subject to
final inspection for the compliance to customer requirements.
– ASTM 53
– API Spec 5L
– ASTM A252-89, EN10217, EN10219
ERW pipe is a high-speed production product, that can be made in continuous lengths up to 115’(35m). It produces
uniform wall thicknesses and outside dimensions and is made in a wide range of specifications.
It does, however, require minimum tonnage to set up on a specific size and sometimes has long lead times.
– API 5L: GR A, GR B, X42, X46, X56, X60, X65, X70
– ASTM A252 GR 1, GR 2, GR 3
– ASTM A53: GR A, GR B, GR C, GR D
– BS 4360: Grade 43, Grade 50
– EN: S275, S275JR, S355JRH, S355J2H