The chinese market is one of the most competitive in the world when it comes to the sale of Casing Pipes. With so many Suppliers and wholesalers vying for business, it can be difficult to know which ones are the best. In this blog post, we will take a look at the top prince casing pipe Wholesalers in china and what makes them stand out from the competition. We will also discuss the advantages of buying from these suppliers and how to find the best deals. Finally, we will provide some tips on how to ensure you get the best quality casing pipes for your project

chemical composition, Mass Fraction (%)
grade   C Mn Mo Cr Ni Cu P S Si
  type min max min max min max min max max max max max max
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
H40 — — — — — — — — — — — — 0.03 —
J55 — — — — — — — — — — — — 0.03 —
K55 — — — — — — — — — — — — 0.03 —
N80 1 — — — — — — — — — — 0.03 0.03 —
N80 Q — — — — — — — — — — 0.03 0.03 —
R95 — — 0.45 c — 1.9 — — — — — — 0.03 0.03 0.45
L80 1 — 0.43 a — 1.9 — — — — 0.25 0.35 0.03 0.03 0.45
L80 9Cr — 0.15 0.3 0.6 0.9 1.1 8 10 0.5 0.25 0.02 0.03 1
L80 13Cr 0.15 0.22 0.25 1 — — 12 14 0.5 0.25 0.02 0.03 1
C90 1 — 0.35 — 1.2 0.25 b 0.85 — 1.5 0.99 — 0.02 0.03 —
T95 1 — 0.35 — 1.2 0.25 b 0.85 0.4 1.5 0.99 — 0.02 0.03 —
C110 — — 0.35 — 1.2 0.25 1 0.4 1.5 0.99 — 0.02 0.03 —
P110 e — — — — — — — — — — 0.030 e 0.030 e —
Q125 1 — 0.35   1.35 — 0.85 — 1.5 0.99 — 0.02 0.01 —
NOTE Elements shown shall be reported in product analysis.
a The carbon content for L80 may be increased up to 0.50 % maximum if the product is Oil-quenched or polymer-quenched.
b The molybdenum content for Grade C90 Type 1 has no minimum tolerance if the Wall thickness is less than 17.78 mm.
c The carbon content for R95 may be increased up to 0.55 % maximum if the product is oil-quenched.
d The molybdenum content for T95 Type 1 may be decreased to 0.15 % minimum if the wall thickness is less than 17.78 mm.
e For EW Grade P110, the phosphorus content shall be 0.020 % maximum and the sulfur content 0.010 % maximum.