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Tubes
When green tubes enter the facility they are
inspected for any defects to ensure quality.
All tool joints are
manufactured using state of the art CNC machines, guaranteeing accuracy and
quality. Drill Pipe International, LLC thoroughly inspects all bars and
forgings from which tool joints will be manufactured. Tool joints are
produced using 4137M material and heat treated to industry standards before
threading. All threading is done in accordance with industry standards spec
7. Hard banding is available upon customer request. Drill Pipe International
has the capacity to meet the needs of any customer.
Upsetting
Once green tubes enter the
facility they are upset in accordance with customer specifications. Drill
Pipe International, LLC offers an external upset (EU), internal upset (IU),
and an internal-external upset (IEU). Our group 1 and 3 upsets utilize a
geometry which minimizes stress concentration. Tool joint assembly is
designed to improve the transition from the cross section of the pipe to the
tool joint weld neck. Our internal (IU) and internal-external (IEU) upsets
are designed to have a longer internal upset taper (miu) than the industry
standards 5D requirements. After upsetting, QC supervisors inspect the pipe
to guarantee upset dimensions and quality.
Heat Treating
By maintaining its own
heat treating furnace, Drill Pipe International, LLC controls all areas
within the manufacturing process. Drill Pipe International, LLC offers all
industry standard 5D grades and also offers pipe suitable for sour services.
All heat treatment is done in accordance with Drill Pipe International, LLC
specifications. All mechanical testing is done to industry standard 5D
requirements.
Inertia Welding
Tool joints and drill pipe
are bonded utilizing inertia welding. These machines guarantee the most
consistent and reliable weld available. All inner and outer weld rings are
removed from the pipe, and then the weld zone of the drill pipe is quenched
and tempered to achieve its proper physicals as required by industry
standard Spec 7 SR1. After the welding process is complete, each piece of
drill pipe is examined in a wet magnetic particle testing unit and
ultrasonic tested by independent third party level 2 inspectors. Welds are
also inspected for
correct hardness (less than 37 H.R.C) and thickness. At this stage one last
quality check is utilized to verify any visual defects. Once drill pipe
passes these tests it is stamped to industry standard requirements and ready
for finishing.
Non Destructive Testing
Full length tubes are
inspected using ultrasonic inspection, while the upset ends are tested with
a wet magnetic particle inspection. This inspection is carried out after the
upsets are machined to the required dimensions. These tests guarantee that
the drill pipe is free from defects.
Finishing
Drill pipe is finished to
customer specifications. Before external coating, zinc based thread compound
is applied to all drill pipe threads. After the zinc compound is applied
each drill pipe is fitted with standard thread protectors. Upon request
drill pipe can be internally plastic coated. Once coated, drill pipe is
ready for shipment.
When ordering, please
specify:
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Drill pipe OD
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Nominal Weight
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Pipe Grade
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Range
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Connection Type
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Tool Joint OD
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Tool Joint ID
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