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Bq Nq Hq Drilling Through Steel Pipe Od 420mm

Minimum Order Quantity : 3 tons Price : negotiable
Packaging Details : packing in standard marine packages Delivery Time : 30-45 days
Payment Terms : T/T, L/C, D/A, D/P, Western Union, MoneyGram Supply Ability : 50000 tons per year
Place of Origin: Zhejiang,China Brand Name: TORICH
Certification: ISO 9001 ISO 14001 TS 16949 Model Number: GB/T 9808-2008

Detail Information

Product Name: BQ NQ HQ 45MnMoB Drill Steel Pipe Keyword: Drill Steel Pipe
Shape: Round Technique: Cold Drawn Seamless
Application: For Wire-line Drill Rods,core Barel Tubes,drill Rods Coupling Casing Material: 45MnMoB,10#,20#,45#,4130,4140,16Mn,etc.
Length: 3450mm,3500mm,max12000mm OD: 5-420mm
WT: 0.5-50mm Delivery Time: 5-15 Days
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drilling through steel pipe od 420mm

Product Description

BQ NQ HQ 45MnMoB Drill Steel Pipe

Product information
Applicatioan: for wire-line drill rods,core barel tubes,drill rods coupling casing
Size range: OD 5-420mm, WT 0.5-50mm Length max12000mm
Material: 45MnMoB,10#,20#,45#,4130,4140,16Mn,etc.

Chemical composition of 45MnMoB
C: 0.41-0.49,Si: 0.17-0.37,Mn: 0.9-1.2,S: 0.04max,P: 0.04max,Mo: 0.2-0.3,B: 0.001-0.005


Tolerance of Outer Diameter and Wall Thickness

Standard Production Method Tube Size   Tolerance
GB/T 9808-2008 Hot rolled OD (+1.0%D) or +0.65
(-0.5%D) -0.35
WT ≤10 (+15%S)or +0.45
(-10%S) -0.35
>10 (+12.5%S, -10%S)
Cold Drawn(rolled) OD   ±0.50%D or ±0.20
WT   ±8%S or ±0.15
Q(N)/ T118-2010 Cold Drawn OD OD ±0.40%D or ±0.20
WT WT ±7%S or ±0.15


Mechanical Property

No. Grade Tensile Strangth Rm/MPa Specifies the non-proportional extension strength Rp0.2/MPa

Percentage elongation after fracture


No less than
1 ZT380 640 380 14
2 ZT490 690 490 12
3 ZT520 780 520a 15b
4 ZT540 740 540 12
5 ZT590 770 590 12
6 ZT640 790 640 12
7 ZT740 840 740 10

a Grade ZT520 measure RP0.5

bGrade ZT520 use tensile sample S4 S5 or S6 in GB/T 228

Bq Nq Hq Drilling Through Steel Pipe Od 420mm 0

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