The scope of this license includes the following product: Manufacturer of CRA Line Pipe QMS Exclusions: Section 7.3, Design and Development

CHANGSHU WALSIN SPECIALITY STEEL CO., LTD. No. 2, Haiyang Road

Haiyu Town Changshu City, Jiangsu

People's Republic of China

5LC-0021

5LC-0021

API Spec 5LC

Effective Date: SEPTEMBER 21, 2012 Expiration Date: SEPTEMBER 21, 2015

Q1-0771

CHANGSHU WALSIN SPECIALITY STEEL CO., LTD. No. 2, Haiyang Road

Haiyu Town Changshu City, Jiangsu

People's Republic of China

Effective Date: September 21, 2012 Expiration Date: September 21, 2015

Registered Since: September 21, 2009

Section 7.3, Design and Development

Manufacture of Stainless Steel and Alloy Steel Seamless Pipes and Tubes

0994

CHANGSHU WALSIN SPECIALITY STEEL CO., LTD. No. 2, Haiyang Road

Haiyu Town Changshu City, Jiangsu

People's Republic of China

Manufacture of Stainless Steel and Alloy Steel Seamless Pipes and Tubes

Section 7.3, Design and Development

Effective Date: September 21, 2012

Expiration Date: September 21, 2015

Registered Since: September 21, 2009

ISO 9001:2008

TS-0604

Manufacture of Stainless Steel and Alloy Steel Seamless Pipes and Tubes

Section 7.3, Design and Development

Effective Date: September 21, 2012

Expiration Date: September 21, 2015

Registered Since: September 21, 2009

CHANGSHU WALSIN SPECIALITY STEEL CO., LTD. No. 2, Haiyang Road

Haiyu Town Changshu City, Jiangsu

People's Republic of China

Facility ID: 6323 API is an equal opportunity employer

CHANGSHU WALSIN SPECIALITY STEEL CO., LTD.

No. 2, Haiyang Road

Haiyu Town

Changshu City, Jiangsu 215519

People’s Republic of China

May 22, 2012

ATTENTION: Sun Bin

RE: API MONOGRAM LICENSE NO. 5LC-0021

APIQR REGISTRATION NO. 0994 FOR ISO 9001:2008

APIQR REGISTRATION NO. Q1-0771 FOR API SPEC Q1

APIQR REGISTRATION NO. TS-0604 FOR ISO/TS 29001

We have completed our review of your quality program and found it acceptable.

You may continue to apply the API Monogram and APIQR Marks in accordance with

marking requirements as stated in the API License Agreement/APIQR Registration

Agreements.

CHANGSHU WALSIN SPECIALITY STEEL CO., LTD., No. 2, Haiyang Road, Haiyu

Town, Changshu City, Jiangsu 215519, People’s Republic of China will continue to be

listed on the API Composite List Website.

Very truly yours,

AMERICAN PETROLEUM INSTITUTE

W. Don Whittaker

Manager - Monogram Program/APIQR

DW:nc