– Certification and standards: API Spec 7-1, API Spec 7-2, Q1 and ISO 9001, ISO
29001 and NS-1
– Slick and Spiral exclusively forged HWDP (not welded or hot rolled material)
– Type I / Type II – with one or two central upsets, Type III – Spiral with one central
upset
– Steel grade: AISI 4145H mod, fully heat treated as per API Specification
– At customer request it is possible to produce HWDP from non-magnetic and
H2S resistant steel grades
Technical parameters
– OD: from 88,9 mm (3 1/2”) up to 168,3 mm (6 5/8”)
– Standard length: 8300 mm, 9450 mm, 12250 mm, 12500 mm
– Standard API and double shouldered thread connections are made with stress
relieved elements, cold rolled and phosphated, and equipped with pressed
steel or heavy duty plastic thread protectors оn both ends
– Hard banding of ARNCO150/350XT, Castolin OTW 13CF and HOTW 10SS,
tungsten carbide
– Ultimate tensile strength: min – 140 000/965 ksi/mPa, Yield strength: min
110,000/758 ksi/mPa, Elongation: 15%, Impact strength: min 48J, Brinell
hardness: min 285-341 HB
– Mechanical properties guaranteed to 1”
below steel surface.
