Product

Size

Steal Grade

Specification

Features

Application

OD(mm)

WT(mm)

Legs

324~720

20~85

A517 Gr.Q

ASTM A517

Using hot rolling seamless tube &pipe instead of semi-circle plate；
Using low finishing deformation temperature and large deformation quantity, more tiny uniform austenite grain size；
Delivered by quenching+tempering condition to make the products obtain excellent tenacity and performance stability.

Jack-up ocean oil rig

Bracing&Pipe

114.3～720

5.0～85

X52Q
X65Q
X70Q
X80Q
X90Q
X100Q

API 5L

Toguarantee the basic strength, toughness and welding performance of the product by the composition of relative low C and high Mn content; 

To increase the material toughness and performance stability by using the micro alloy strengthening principle of elements Nb and Ti.

Jack-up ocean oil rig