Alloy STEEL CASTING API-7-1 HEAVY WEIGHT DRILL PIPE 3.5in-6 5/8"

Api 7-1 heavy weight drill pipe for drilling :
1.raw material: aisi 4145h mod
2.quality: api spec 7-1 & iso
3.delivery time: 30 days
4.price: manufacturer's price
parameter of hwdp drill pipe:
od of bits: 3 12"--6 58"
standard: api 7-1 & api q1
material: 4145h
hardfacing: hf1000,hf2000,hf3000,hf4000
manufacturing technique:
1. Process: eaf + lf + vd + forged + heat treatment (optional)+fine machined
2. Heat treatment: normalized annealed quenched tempered
3. Delivery condition: hot forged +rough machined +turned (optional)+fined machined
test: ut & mt testing
1.our drill pipes are mainly made from 4330v forging steel.
2.the physical properties are guaranteed one inch below the surface at normal temperature.
3.heat treated by water quenching and tempering,rough machined as the drawing dimensions.
4.strict ut inspection according to astm a-388 to guarantee high quality.
5. Tungsten carbide alloy buttons were inserted into blades so as to keep its hardness.
Skype: lucky_lakepetro