Home Cart Quotation About-Us
www.ChineseStandard.net
SEARCH

SH/T 0305-1993 PDF English

US$70.00 · In stock · Download in 9 seconds
SH/T 0305-1993: Determination method for the seal compatibility index of petroleum products
Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure

SH/T 0305: Historical versions

Standard IDUSDBUY PDFDeliveryStandard Title (Description)Status
SH/T 0305-199370 Add to Cart Auto, 9 seconds. Determination method for the seal compatibility index of petroleum products  
SH/T 0305-1992RFQ ASK 3 days (Chinese Industry Standard) Obsolete

Similar standards

NB/SH/T 0324   SH/T 0305   GB/T 265   

SH/T 0305-1993: Determination method for the seal compatibility index of petroleum products

---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/SHT0305-1993
SH Petrochemical Industry Standard of the People’s Republic of China Replacing SH/T 0305-92 Determination method for the seal compatibility index of petroleum products APPROVED ON. JUNE 11, 1993 Implemented on: MAY 1, 1994 Approved by. China Petrochemical Corporation (Sinopec Group).

Table of Contents

1 Subject content and application scope ... 3 2 Reference standard ... 3 3 Definition ... 3 4 Method summary ... 3 5 Apparatuses and material... 3 6 Reagent ... 5 7 Test procedures ... 5 8 Calculation ... 6 9 Precision... 8 10 Report ... 9 Additional information... 9 Determination method for the seal compatibility index of petroleum products

1 Subject content and application scope

This Standard specifies the determination method for the seal compatibility index of petroleum products. This Standard applies to petroleum products, excluding the ones containing water.

2 Reference standard

GB/T 528 Determination of the tensile properties of vulcanized rubber GB/T 531 Rubber – Determination of Shore A hardness

3 Definition

Seal compatibility index (SCI). It refers to the percentage of volume expansion that is converted from the diameter expansion of the standard nitrile rubber ring in the test sample, under the specified test conditions.

4 Method summary

USE a taper gauge to measure the inner diameter of the rubber ring. SOAK the rubber ring in the test sample at 100°C for 24h. TAKE it out for cooling. USE a taper gauge to measure the inner diameter change rate of the rubber ring in unit of the percentage of volume expansion.

5 Apparatuses and material

5.1 Apparatuses 5.1.1 Rubber ring. The rubber rings refer to the square cross-section rings made from processed nitrile rubber. The inner diameter is 25 ± 0.25mm. The side length of the square cross section is 1.5 ± 0.15mm. 7.3 PUT a rubber ring in the cooling oil at room temperature. SOAK for 15min. 7.4 USE a bamboo tweezer to take out the soaked rubber ring. PUT it on the filter paper, so as to drain the oil slick on the surface of the rubber ring. AVOID stretching or twisting the rubber ring. 7.5 Gently PUT the rubber ring on the taper gauge, so as to measure the inner diameter of the rubber ring. PLACE the side with less burrs face down on the taper gauge. During the measurement, USE one hand to gently touch the rubber ring. USE the other hand to rotate the taper gauge, so as to keep the rubber ring on the horizon. PAY special attention to avoid stretching the rubber ring. Furthermore, MAKE sure that there is no visible gap between the rubber ring and the taper gauge by observation. OBSERVE the lower edge of the rubber ring. READ out the dimension of inner diameter D1, accurate to 0.025mm (1/4 scale). 7.6 PUT the rubber ring into the test oil after the measurement. It is only allowable to put one rubber ring into each wide-mouth bottle. SHAKE the wide- mouth bottle, so as to totally soak the rubber ring into the test oil. COVER the lid. PUT the wide-mouth bottle in the drying oven preheated to 100 ± 2°C immediately. KEEP the drying oven at constant temperature for 24h. 7.7 After keeping at constant temperature for 24h, TAKE out the wide-mouth bottle from the drying oven. USE the bamboo tweezer cleaned with petroleum ether to take out the rubber ring. PUT the rubber ring into the cooling oil immediately. COVER the lid. COOL for 45 ± 15min. 7.8 MEASURE according to the steps specified in the Articles 7.4 and 7.5. READ out the inner diameter dimension of the expanded rubber ring D2, accurate to 0.025mm (1/4 scale). The expanded rubber ring is extremely easy to deform. PAY special attention to avoid stretching or twisting the rubber ring during the measurement. Note. The overall test procedures must be conducted by the same person.

8 Calculation

8.1 CALCULATE the percentage of volume expansion of the rubber ring SV (%) according to the Formula (1). Where. 1.7 5.19 6.7 21.48 11.7 39.37 1.8 5.49 6.8 21.82 11.8 39.74 1.9 5.81 6.9 22.16 11.9 40.12 2.0 6.12 7.0 22.51 12.0 40.49 2.1 6.43 7.1 22.85 12.1 40.87 2.2 6.75 7.2 23.19 12.2 41.25 2.3 7.06 7.3 23.54 12.3 41.62 2.4 7.37 7.4 23.88 12.4 42.00 2.5 7.69 7.5 24.23 12.5 42.38 2.6 8.00 7.6 24.58 12.6 42.76 2.7 8.32 7.7 24.92 12.7 43.14 2.8 8.64 7.8 25.27 12.8 43.52 2.9 8.95 7.9 25.62 12.9 43.91 3.0 9.27 8.0 25.97 13.0 44.29 3.1 9.59 8.1 26.32 13.1 44.67 3.2 9.91 8.2 26.67 13.2 45.06 3.3 10.23 8.3 27.02 13.3 45.44 3.4 10.55 8.4 27.38 13.4 45.83 3.5 10.87 8.5 27.73 13.5 46.21 3.6 11.19 8.6 28.08 13.6 46.60 3.7 11.52 8.7 28.44 13.7 46.99 3.8 11.84 8.8 28.79 13.8 47.38 3.9 12.16 8.9 29.15 13.9 47.76 4.0 12.49 9.0 29.50 14.0 48.15 4.1 12.81 9.1 29.86 14.1 48.54 4.2 13.14 9.2 30.22 14.2 48.94 4.3 13.46 9.3 30.58 14.3 49.33 4.4 13.79 9.4 30.93 14.4 49.72 4.5 14.12 9.5 31.29 14.5 50.11 4.6 14.44 9.6 31.65 14.6 50.51 4.7 14.77 9.7 32.01 14.7 50.90 4.8 15.10 9.8 32.38 14.8 51.30 4.9 15.43 9.9 32.74 14.9 51.69 5.0 15.76 10.0 33.10 15.0 52.09

9 Precision

USE the following provisions to determine the reliability of the obtained results (95% confidence level). 9.1 Repeatability. The difference between the two results repeatedly measured by the same operator shall not be greater than . 9.2 Reproducibility. The difference between the two measurement results put forward by two laboratories shall not be greater than . ①Note. refers to average value. ② The provisions for the degree of precision are obtained after conducting statistical tests to the samples whose SCI is within the range of 1-35.

10 Report

TAKE the arithmetic average value of the two results obtained from repeat measurement. The arithmetic average value is rounded to integer, so as to obtain the SCI of samples as the measurement result. Additional information. This Standard shall be under the jurisdiction of the Technical Department of SINOPEC Research Institute of Petroleum Processing. This Standard was responsibly drafted by Oil Refinery of Shanghai Gaoqiao Petrochemical Corporation. The main drafters of this Standard are Zhi Mian and Ni Minren. This Standard references to and adopts UK Petroleum Industry Association standard IP 278/72(88) “Seal compatibility index of petroleum products”. This Standard was first-time published in 1984. ......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
Image 1     Image 2     Image 3     

Tips & Frequently Asked Questions:

Question 1: How long will the true-PDF of English version of SH/T 0305-1993 be delivered?Answer: The full copy PDF of English version of SH/T 0305-1993 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.

Question 2: Can I share the purchased PDF of SH/T 0305-1993_English with my colleagues?Answer: Yes. The purchased PDF of SH/T 0305-1993_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.

Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countries

Question 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- SH/T 0305-1993 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.

Question 5: Should I purchase the latest version SH/T 0305-1993?Answer: Yes. Unless special scenarios such as technical constraints or academic study, you should always prioritize to purchase the latest version SH/T 0305-1993 even if the enforcement date is in future. Complying with the latest version means that, by default, it also complies with all the earlier versions, technically.

How to buy and download a true PDF of English version of SH/T 0305-1993?

A step-by-step guide to download PDF of SH/T 0305-1993_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).
Step 2: Search keyword "SH/T 0305-1993".
Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart.
Step 4: Select payment option (Via payment agents Stripe or PayPal).
Step 5: Customize Tax Invoice -- Fill up your email etc.
Step 6: Click "Checkout".
Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively.
Step 8: Optional -- Go to download PDF.
Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice.
See screenshots for above steps: Steps 1~3    Steps 4~6    Step 7    Step 8    Step 9