Notice:

The information contained within this document is based on the laboratrial experiment. The use of the information contained within this document is at reader’s risk and no warranty is implied or expressed by JFE Steel Corporation with respects to the use of information herein.

JFE Steel Corporation

Design Feature of JFEBEAR

Contoured

Metal to Metal Seal

JFEBEAR Thread Profile (1)

-5° 25°

Coupling

Pipe

Optimized Gap

Optimized Gap Concept

×○Anti Galling

Capability

○×Compression Capability

Narrow

Gap

○

○

Optimized

Gap

Wide

Gap

-5° 25°

Coupling

Pipe

Gap

JFEBEAR Compression resistance

Seal

Optimized Ｇ ap

Stab Flank absorbsCompression

Reduced NoseDeformation

No Leak

DesignMake-up

Compression

Tension

Seal

Thread

KSBEAR Thread Profile (2)

PIPE

Coupling

Pipe

Negative load flank

-5° 25°

Different Corner Radius on Load Flanks on Pipe and Coupling Threads

Excellent Thread Galling Resistance

JFEBEAR Seal Profile

Coupling

Pipe

ContouredMetal to Metal Seal

Reduced Local Stress Concentration

Excellent Seal Galling Resistance

Summary of Design Features

Optimized Gap Between Stabbing Flanks on Pipe and Coupling Threads

Different Corner Radius on Load Flanks of Pipe and Coupling Threads

Excellent Compression Capability

Excellent Galling Resistance

Contoured Metal to Metal

Results in high compression capability while maintaining excellent galling resistance

- Benefit -- Design -

Specimen #1 #2 #3 #4 #5 #6 #7 #8

Thd/ Seal H / L L / L H / H L / H H / L H / L L / H L / HTaper PS BF PS BF Nom Nom PF BS PS BF PS BF PF BS PF BS

Make&Break MU(A) MU(A) MU(A) MU(A) MU(A) MU(A) MU(A) MU(A)H / L H / H H / H H / H H / L H / H H / L H / L

dope/ torqueRRG(B) RRG(B) RRG(B) RRG(B)L / H L / H L / H L / H

MBG(B) MBG(B) MBG(B) MBG(B)L / H L / H L / H L / H

FMU(B) FMU(B) FMU(B) FMU(B) FMU(B) FMU(B) FMU(B) FMU(B)H / L H / H H / H H / H H / L H / H H / L H / L

Bake Bake Bake Bake Bake Bake Bake Bake Bake

Series A T/ C T/ C T/ C T/ C pi/ po pi/ po pi/ po pi/ po

Series B T/ C pi T/ C pi T/ C pi T/ C piw Bend w Bend w Bend w Bend

Series C Thermal Thermal Thermal Thermal cycle cycle cycle cycle

ISO-13679 CAL4 Test Program

Galling Resistance on Make & Break Test

Specimen #2 #3 #4 #5 #6 #7 #8

Thd/ Seal L / L H / H L / H H / L H / L L / H L / HTaper PS BF Nom Nom PF BS PS BF PS BF PF BS PF BS

Make&Break RRG(B) RRG(B) RRG(B) RRG(B)L / H L / H L / H L / H

dope/ torqueMBG(B) MBG(B) MBG(B) MBG(B)L / H L / H L / H L / H

Make & Break test on ISO-13679 CAL IV

4

9

Number of Make&Break

Specimen #3B : Totally 13 times Makes & Breaks

Specimen #3B after 13th Make&Break test (HP2-110 4-1/2”x15.1#)

HP2-13CR-110ksi 4-1/2"x15.1# KSBEARVME Pipe and Connection Service Envelope

-20 00 0

-15 00 0

-10 00 0

-5 00 0

0

5 00 0

10 00 0

15 00 0

20 00 0

-8 00 00 0 -6 00 00 0 -4 00 00 0 -2 00 00 0 0 2 00 00 0 4 00 00 0 6 00 00 0

Compression Load lb (F) x 1000 Te nsion

Exte

rnal

Pres

sure

(ps

i)

In

tern

al

10 0% Pipe Bo dy VME AP I Co llapse 9 5% Pipe Bo dy VME ISO 9 5% Co nn ection Lo ad Env elop e

JFEBEAR Connection Physical Envelopeproved on ISO-13679 CAL4 Test

HP2-13CR 110ksi 4-1/2”x15.1#

ISO VME VS XOM VME JFE has prided them self's on testing to the most strenuous environments and

conditions No de-rated of any size or weight full Envelope

Exxon Load points

ISO Load Points

Exxon 50% Compression Limit

ISO 80% Compression Limit

13

JFEBEAR Test progress

Customer Procedure Size Grade ProgressProduct line testExxonMobil ExxonMobil spec. 6 sizes 3 1/ 2" 7"（ ～ ） HP2-95 67%Shell Independent＆ NAM TEO spec. 3 sizes 5 1/ 2" 7"（ ～ ） 13CR-80 100%Shell Independent＆ ISO 13679 CAL4 4 sizes 3 1/ 2", 4 1/ 2"（ ） HP2-110 50%Spot testCOP/ Magnolia ISO 13679 CAL4 3 1/ 2"x9.2#, 4 1/ 2"x15.5# HP2-110 100%COP/ UK ISO 13679 CAL4 5 1/ 2"x23# HP2-110 100%Tarim/ China ISO 13679 CAL4 3 1/ 2"x9.2# HP1-110 100%Gazprom/ Russia Gazprom spec. 5 1/ 2"x17# 110L 100%ADCO/ UAE ADCO spec. 2 7/ 8" 7"～ L80 100%XOM/ Hibernia ExxonMobil spec. 7"x29# 13CR80 100%EPMI ExxonMobil spec. 3 1/ 2"x9.2# 13CR80 100%

Design and data reviewChevron Design and data review 2 7/ 8" 7"～ N/ A 100%SNEPCO/ Shell Design and data review 5 1/ 2"x20# 13CR-80 100%BP Design and data review 2 7/ 8" 7"～ N/ A 100%

Notice: The information contained within this document is based on the laboratorial experiment. The use of the information contained within this document is at reader's risk and no warranty is implied or expressed by JFE Steel Corporation with respects to the use of information herein.

Confidential

14

JFEBEAR Test progress

Notice: The information contained within this document is based on the laboratorial experiment. The use of the information contained within this document is at reader's risk and no warranty is implied or expressed by JFE Steel Corporation with respects to the use of information herein.

ConfidentialBEAR test status # OF rev 2 2008.03.18

Category Size Grade Test procedure sample# Comments

ISO 3 1/2" 9.2# HP2-110 ISO 13679 CAL4 80% compression 8 Initially tested for COP MagnoliaISO 3 1/2" 14.3# HP2-110 ISO 13679 CAL4 80% compression 8 Starting 09/08

ISO 4 1/2" 12.6# HP2-110 ISO 13679 with Shell modification 80%

compression

8 Combined procedure approved by

both Shell USA and UK was applied

ISO 4 1/2" 15.1# HP2-110 ISO 13679 CAL4 80% compression

8 Spot test for COP Magnolia

ISO 4 1/2" 18.9# HP2-110 ISO 13679 CAL4 80% compression

8 Starting 08/08

ISO 5 1/2" 23# HP2-110 ISO 13679 CAL4 80% compression

8

NAM 5 1/2" 23# 13CR80 NAM/TEO/3 with modification 80% compression

8 Spot test for COP UK, Clear Plate

+API mod was applied

NAM 7" 29# 13CR80 NAM/TEO/3 with modification 80%

compression

8

NAM 7" 35# 13CR80 NAM/TEO/3 with modification 80%

compression

8

ExxonMobil 3 1/2" 7.7# HP2-95 ExxonMobil spec. 7 On Going

ExxonMobil 3 1/2" 14.3# HP2-95 ExxonMobil spec. 7 Completed

ExxonMobil 5 1/2" 17# HP2-95 ExxonMobil spec. 7 Completed

ExxonMobil 5 1/2" 23# HP2-95 ExxonMobil spec. 7 Completed

ExxonMobil 7" 26# HP2-95 ExxonMobil spec. 7 Completed

ExxonMobil 7" 32# HP2-95 ExxonMobil spec. 7 Completed

ExxonMobil 7" 29# 13CR80 ExxonMobil spec. 7 Spot test for Hibernia

ExxonMobil 3 1/2" 9.2# 13CR80 ExxonMobil spec. 7 Spot test for EPMI

Clear Run 5 1/2" 23# HP2-110 Abbreviated ISO 13679 80% compression

2 HL, LH were tested with ISO A

Clear Run 2 7/8" 7.8# HP1-110 Abbreviated ISO 13679 80% compression

1 HL was tested with ISO A

Clear Run 2 3/8" 4.6# 13CR80 Abbreviated ISO 13679 80% compression

1 HL was tested with ISO B

15

JFEBEAR Test progress

Notice: The information contained within this document is based on the laboratorial experiment. The use of the information contained within this document is at reader's risk and no warranty is implied or expressed by JFE Steel Corporation with respects to the use of information herein.

Confidential

; Done

; To be done

Category Size Grade Test procedure sample# Comments

Clear Run 5 1/2" 23# HP2-110 Abbreviated ISO 13679 80% compression

2 HL, LH were tested with ISO A

Clear Run 2 7/8" 7.8# HP1-110 Abbreviated ISO 13679 100% compression

1 HL was tested with ISO A

Clear Run 2 3/8" 4.6# 13CR80 Abbreviated ISO 13679 80% compression

1 HL was tested with ISO B

Clear Run 4 1/2" 12.6# HP2-110 Abbreviated ISO 13679 80% compression

1 HL was tested with new ISO A, B elevated temp. B ambient temp. and C

Clear Run 3 1/2" 9.2# 13CR80 ExxonMobil spec. 1 HL was tested with XOM sample #5&6 conditions.